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    —— (E)-3-[4-[[1-[[1-cyclopentyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C32H32N4O5
    (E)-3-[4-[[1-[[1-cyclopentyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[1-[(1R,2R)-2-methylcyclohexyl]-2-(2-pyridyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C35H37N5O4
    (E)-3-[4-[[1-[[1-[(1R,2R)-2-methylcyclohexyl]-2-(2-pyridyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[1-cyclopentyl-2-(2-thienyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C32H32N4O4S
    (E)-3-[4-[[1-[[1-cyclopentyl-2-(2-thienyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[2-chloro-5-[2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]propanoylamino]phenyl]prop-2-enoic acid —— C30H29ClN4O5
    (E)-3-[2-chloro-5-[2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]propanoylamino]phenyl]prop-2-enoic acid
    —— ethyl 1-(adenin-9-yl)-1,5,6,7,8-pentadeoxy-β-D-ribo-oct-7(Z)-en-5-ynofuranuronate —— C16H17N5O5
    ethyl 1-(adenin-9-yl)-1,5,6,7,8-pentadeoxy-β-D-ribo-oct-7(Z)-en-5-ynofuranuronate
    —— (E)-3-[4-[[1-[[(2Z)-1-cyclopentyl-2-pyrrol-2-ylidene-3H-benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C32H33N5O4
    (E)-3-[4-[[1-[[(2Z)-1-cyclopentyl-2-pyrrol-2-ylidene-3H-benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C33H34N4O5
    (E)-3-[4-[[1-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-4-[[(1S)-2-[[(1S)-3-amino-1-[[12-[[(1S,2R)-1-[[(1S)-2-amino-1-benzyl-2-oxo-ethyl]carbamoyl]-2-methyl-butyl]amino]-12-oxo-dodecyl]carbamoyl]-3-oxo-propyl]amino]-1-benzyl-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid —— C44H63N7O9
    (E)-4-[[(1S)-2-[[(1S)-3-amino-1-[[12-[[(1S,2R)-1-[[(1S)-2-amino-1-benzyl-2-oxo-ethyl]carbamoyl]-2-methyl-butyl]amino]-12-oxo-dodecyl]carbamoyl]-3-oxo-propyl]amino]-1-benzyl-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid
    —— (E)-3-(2-amino-3-phenyl-imidazo[1,2-a]pyridin-6-yl)-N-methyl-3-phenyl-prop-2-enamide —— C23H20N4O
    (E)-3-(2-amino-3-phenyl-imidazo[1,2-a]pyridin-6-yl)-N-methyl-3-phenyl-prop-2-enamide
    —— (E)-3-[3-[5-(dimethylamino)-3-ethyl-2-methyl-6-oxo-1H-pyridine-4-carbonyl]phenyl]-2-methyl-prop-2-enenitrile —— C21H23N3O2
    (E)-3-[3-[5-(dimethylamino)-3-ethyl-2-methyl-6-oxo-1H-pyridine-4-carbonyl]phenyl]-2-methyl-prop-2-enenitrile
    —— (E)-3-[4-[[1-[[1-cyclopentyl-2-(1-methylpyrrol-2-yl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C33H35N5O4
    (E)-3-[4-[[1-[[1-cyclopentyl-2-(1-methylpyrrol-2-yl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[1-[(2S,6S)-2,6-dimethylcyclohexyl]-2-(2-thienyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C35H38N4O4S
    (E)-3-[4-[[1-[[1-[(2S,6S)-2,6-dimethylcyclohexyl]-2-(2-thienyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[1-cyclobutyl-2-(2-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C31H30N4O5
    (E)-3-[4-[[1-[[1-cyclobutyl-2-(2-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[3-cyclohexyl-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]propanoyl]amino]phenyl]prop-2-enoic acid —— C36H40N4O5
    (E)-3-[4-[[3-cyclohexyl-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]propanoyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[(2Z)-1-[(1R,4S)-2-bicyclo[2.2.1]heptanyl]-2-pyrrol-2-ylidene-3H-benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C34H35N5O4
    (E)-3-[4-[[1-[[(2Z)-1-[(1R,4S)-2-bicyclo[2.2.1]heptanyl]-2-pyrrol-2-ylidene-3H-benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— ethyl (E)-4-[[(2S,5R)-5-[2,4-dioxo-5-(2-thienyl)pyrimidin-1-yl]tetrahydrofuran-2-yl]methylamino]-4-oxo-but-2-enoate —— C19H21N3O6S
    ethyl (E)-4-[[(2S,5R)-5-[2,4-dioxo-5-(2-thienyl)pyrimidin-1-yl]tetrahydrofuran-2-yl]methylamino]-4-oxo-but-2-enoate
    —— ethyl (E)-3-[3-[5-(dimethylamino)-3-ethyl-2-methyl-6-oxo-1H-pyridine-4-carbonyl]phenyl]prop-2-enoate —— C22H26N2O4
    ethyl (E)-3-[3-[5-(dimethylamino)-3-ethyl-2-methyl-6-oxo-1H-pyridine-4-carbonyl]phenyl]prop-2-enoate
    —— (E)-Neomanoalide 24,25-diacetate —— C29H42O6
    (E)-Neomanoalide 24,25-diacetate
    —— (E)-3-[4-[[1-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]-2-methyl-phenyl]prop-2-enoic acid —— C34H36N4O5
    (E)-3-[4-[[1-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]-2-methyl-phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[(2R)-2-[[1-cyclohexyl-2-(3-furyl)-4-methyl-benzimidazole-5-carbonyl]amino]propanoyl]amino]phenyl]prop-2-enoic acid —— C31H32N4O5
    (E)-3-[4-[[(2R)-2-[[1-cyclohexyl-2-(3-furyl)-4-methyl-benzimidazole-5-carbonyl]amino]propanoyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[1-cyclohexyl-2-(3-thienyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C33H34N4O4S
    (E)-3-[4-[[1-[[1-cyclohexyl-2-(3-thienyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[(2R)-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]-4-phenyl-butanoyl]amino]phenyl]prop-2-enoic acid —— C37H36N4O5
    (E)-3-[4-[[(2R)-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]-4-phenyl-butanoyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[1-[(1R,2R)-2-methylcyclohexyl]-2-(2-thienyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C34H36N4O4S
    (E)-3-[4-[[1-[[1-[(1R,2R)-2-methylcyclohexyl]-2-(2-thienyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[2-(1-methylpyrrol-2-yl)-1-[(1R,4S)-norbornan-2-yl]benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C35H37N5O4
    (E)-3-[4-[[1-[[2-(1-methylpyrrol-2-yl)-1-[(1R,4S)-norbornan-2-yl]benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[(2R)-2-[[1-cyclohexyl-2-(2-pyridyl)benzimidazole-5-carbonyl]amino]propanoyl]amino]phenyl]prop-2-enoic acid —— C31H31N5O4
    (E)-3-[4-[[(2R)-2-[[1-cyclohexyl-2-(2-pyridyl)benzimidazole-5-carbonyl]amino]propanoyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[4-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]piperidine-4-carbonyl]amino]phenyl]prop-2-enoic acid —— C33H35N5O5
    (E)-3-[4-[[4-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]piperidine-4-carbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-((R)-2-{[1-(1-cyclohexyl-2-furan-3-yl-1H-benzoimidazol-5-yl)-methanoyl]-amino}-butanoylamino)-phenyl]-acrylic acid 491583-50-7 C31H32N4O5
    (E)-3-[4-((R)-2-{[1-(1-cyclohexyl-2-furan-3-yl-1H-benzoimidazol-5-yl)-methanoyl]-amino}-butanoylamino)-phenyl]-acrylic acid
    —— (E)-3-[4-[[1-[[1-[(2S,6S)-2,6-dimethylcyclohexyl]-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C35H38N4O5
    (E)-3-[4-[[1-[[1-[(2S,6S)-2,6-dimethylcyclohexyl]-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[(2R)-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]propanoyl]amino]phenyl]prop-2-enoic acid —— C30H30N4O5
    (E)-3-[4-[[(2R)-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]propanoyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[(2S)-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]-4-hydroxy-butanoyl]amino]phenyl]prop-2-enoic acid —— C31H32N4O6
    (E)-3-[4-[[(2S)-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]-4-hydroxy-butanoyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-(4-{[1-(1-{[1-(1-cyclohexyl-2-furan-3-yl-1H-benzoimidazol-5-yl)-methanoyl]-amino}-cyclopropyl)-methanoyl]-amino}-phenyl)-acrylic acid 491583-40-5 C31H30N4O5
    (E)-3-(4-{[1-(1-{[1-(1-cyclohexyl-2-furan-3-yl-1H-benzoimidazol-5-yl)-methanoyl]-amino}-cyclopropyl)-methanoyl]-amino}-phenyl)-acrylic acid
    —— (E)-3-[3-[2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]propanoylamino]phenyl]prop-2-enoic acid —— C30H30N4O5
    (E)-3-[3-[2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]propanoylamino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[(1R,2S)-1-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]-2-vinyl-cyclopropanecarbonyl]amino]phenyl]prop-2-enoic acid —— C33H32N4O5
    (E)-3-[4-[[(1R,2S)-1-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]-2-vinyl-cyclopropanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[[(3Z)-5-chloro-3-[1-(2-cyclopropylethyl)-6-fluoro-2,4-dioxoquinolin-3-ylidene]-1,1-dioxo-4H-1λ6,2,4-benzothiadiazin-8-yl]oxy]prop-2-enamide —— C24H20ClFN4O6S
    (E)-3-[[(3Z)-5-chloro-3-[1-(2-cyclopropylethyl)-6-fluoro-2,4-dioxoquinolin-3-ylidene]-1,1-dioxo-4H-1λ6,2,4-benzothiadiazin-8-yl]oxy]prop-2-enamide
    —— (E)-3-[4-[[1-[[2-(1,3-benzodioxol-4-yl)-1-[(1R,4S)-norbornan-2-yl]benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C37H36N4O6
    (E)-3-[4-[[1-[[2-(1,3-benzodioxol-4-yl)-1-[(1R,4S)-norbornan-2-yl]benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[(2S)-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]-3-(4-phenylphenyl)propanoyl]amino]phenyl]prop-2-enoic acid —— C42H38N4O5
    (E)-3-[4-[[(2S)-2-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]-3-(4-phenylphenyl)propanoyl]amino]phenyl]prop-2-enoic acid
    —— (E)-4-[[(1S)-2-[[(1R)-3-amino-1-[[12-[[(1S,2R)-1-[[(1S)-2-amino-1-benzyl-2-oxo-ethyl]carbamoyl]-2-methyl-butyl]amino]-12-oxo-dodecyl]carbamoyl]-3-oxo-propyl]amino]-1-benzyl-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid —— C44H63N7O9
    (E)-4-[[(1S)-2-[[(1R)-3-amino-1-[[12-[[(1S,2R)-1-[[(1S)-2-amino-1-benzyl-2-oxo-ethyl]carbamoyl]-2-methyl-butyl]amino]-12-oxo-dodecyl]carbamoyl]-3-oxo-propyl]amino]-1-benzyl-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid
    —— (E)-4-[[(1S)-2-[[(1S)-3-amino-1-[[2-[[12-[[(1S,2R)-1-[[(1S)-2-amino-1-benzyl-2-oxo-ethyl]carbamoyl]-2-methyl-butyl]amino]-12-oxo-dodecyl]amino]-2-oxo-ethyl]carbamoyl]-3-oxo-propyl]amino]-1-benzyl-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid —— C46H66N8O10
    (E)-4-[[(1S)-2-[[(1S)-3-amino-1-[[2-[[12-[[(1S,2R)-1-[[(1S)-2-amino-1-benzyl-2-oxo-ethyl]carbamoyl]-2-methyl-butyl]amino]-12-oxo-dodecyl]amino]-2-oxo-ethyl]carbamoyl]-3-oxo-propyl]amino]-1-benzyl-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid
    —— (E)-4-[[(1R)-2-[[(1R)-3-amino-1-[[12-[[(1S,2R)-1-[[(1S)-2-amino-1-benzyl-2-oxo-ethyl]carbamoyl]-2-methyl-butyl]amino]-12-oxo-dodecyl]carbamoyl]-3-oxo-propyl]amino]-1-benzyl-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid —— C44H63N7O9
    (E)-4-[[(1R)-2-[[(1R)-3-amino-1-[[12-[[(1S,2R)-1-[[(1S)-2-amino-1-benzyl-2-oxo-ethyl]carbamoyl]-2-methyl-butyl]amino]-12-oxo-dodecyl]carbamoyl]-3-oxo-propyl]amino]-1-benzyl-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid
    —— (E)-3-[2-amino-3-(2,3,4-trifluorophenyl)imidazo[1,2-a]pyridin-6-yl]-N-methyl-3-phenyl-prop-2-enamide —— C23H17F3N4O
    (E)-3-[2-amino-3-(2,3,4-trifluorophenyl)imidazo[1,2-a]pyridin-6-yl]-N-methyl-3-phenyl-prop-2-enamide
    —— (E)-3-[2-amino-3-(2,5-difluorophenyl)imidazo[1,2-a]pyridin-6-yl]-N-methyl-3-phenyl-prop-2-enamide —— C23H18F2N4O
    (E)-3-[2-amino-3-(2,5-difluorophenyl)imidazo[1,2-a]pyridin-6-yl]-N-methyl-3-phenyl-prop-2-enamide
    —— ethyl (E)-3-[3-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thiaspiro[4.4]non-6-en-3-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]prop-2-enoate —— C29H49N3O10SSi2
    ethyl (E)-3-[3-[(1R,3R,4R)-6-amino-4-[tert-butyl(dimethyl)silyl]oxy-1-[[tert-butyl(dimethyl)silyl]oxymethyl]-8,8-dioxo-2,9-dioxa-8$l^{6}-thiaspiro[4.4]non-6-en-3-yl]-5-methyl-2,6-dioxo-pyrimidin-1-yl]prop-2-enoate
    —— (E)-3-[4-[[1-[[1-cyclohexyl-2-(2-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid —— C33H34N4O5
    (E)-3-[4-[[1-[[1-cyclohexyl-2-(2-furyl)benzimidazole-5-carbonyl]amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-[4-[[1-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclohexanecarbonyl]amino]phenyl]prop-2-enoic acid —— C34H36N4O5
    (E)-3-[4-[[1-[[1-cyclohexyl-2-(3-furyl)benzimidazole-5-carbonyl]amino]cyclohexanecarbonyl]amino]phenyl]prop-2-enoic acid
    —— (E)-3-(4-(1-(1-Cyclohexyl-2-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)cyclopentanecarboxamido)phenyl)acrylic acid —— C34H35N5O4
    (E)-3-(4-(1-(1-Cyclohexyl-2-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)cyclopentanecarboxamido)phenyl)acrylic acid
    —— [(E)-9H-purin-6-ylmethyleneamino]thiourea —— C7H7N7S
    [(E)-9H-purin-6-ylmethyleneamino]thiourea
    —— (E)-4-[[(1S)-2-[[(1S)-2-[[12-[[(1S,2R)-1-carbamoyl-2-methyl-butyl]amino]-12-oxo-dodecyl]amino]-1-[(4-hydroxy-3-nitro-phenyl)methyl]-2-oxo-ethyl]amino]-1-(cyclohexylmethyl)-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid —— C40H62N6O10
    (E)-4-[[(1S)-2-[[(1S)-2-[[12-[[(1S,2R)-1-carbamoyl-2-methyl-butyl]amino]-12-oxo-dodecyl]amino]-1-[(4-hydroxy-3-nitro-phenyl)methyl]-2-oxo-ethyl]amino]-1-(cyclohexylmethyl)-2-oxo-ethyl]amino]-4-oxo-but-2-enoic acid
    —— ethyl (5Z)-5-[(3,5-dimethyl-1H-pyrrol-2-yl)methylene]-2,4-dimethyl-pyrrole-3-carboxylate —— C16H20N2O2
    ethyl (5Z)-5-[(3,5-dimethyl-1H-pyrrol-2-yl)methylene]-2,4-dimethyl-pyrrole-3-carboxylate
    —— Ethyl 4-oxo-3,5-bis(3,4,5-trihydroxybenzylidene)cyclohexanecarboxylate —— C23H22O9
    Ethyl 4-oxo-3,5-bis(3,4,5-trihydroxybenzylidene)cyclohexanecarboxylate
    —— (E,6R)-6-[(3S,5R,8S,9S,10R,14R,17R)-3-acetoxy-4,4,8,10,14-pentamethyl-2,3,5,6,7,9,11,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-methyl-hept-2-enoic acid —— C32H50O4
    (E,6R)-6-[(3S,5R,8S,9S,10R,14R,17R)-3-acetoxy-4,4,8,10,14-pentamethyl-2,3,5,6,7,9,11,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-methyl-hept-2-enoic acid