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    —— (E)-4-[(4R)-4-ethyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]-4-oxobut-2-enoic acid —— C13H15NO3S
    (E)-4-[(4R)-4-ethyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]-4-oxobut-2-enoic acid
    —— Ethyl 7-[(4-bromophenyl)methoxy]-3-(2-methoxyphenyl)-4-oxochromene-2-carboxylate —— C26H21BrO6
    Ethyl 7-[(4-bromophenyl)methoxy]-3-(2-methoxyphenyl)-4-oxochromene-2-carboxylate
    —— (E)-4-oxo-4-[[(2R)-oxolan-2-yl]methyl-[(3R)-thiolan-3-yl]amino]but-2-enoic acid —— C13H19NO4S
    (E)-4-oxo-4-[[(2R)-oxolan-2-yl]methyl-[(3R)-thiolan-3-yl]amino]but-2-enoic acid
    —— (E)-4-[(4S,4aR,8aS)-4-methyl-3,4,4a,5,6,7,8,8a-octahydro-2H-quinolin-1-yl]-4-oxobut-2-enoic acid —— C14H21NO3
    (E)-4-[(4S,4aR,8aS)-4-methyl-3,4,4a,5,6,7,8,8a-octahydro-2H-quinolin-1-yl]-4-oxobut-2-enoic acid
    —— ethyl 5-(4-butoxy-3-methoxyphenyl)-2-[(3,4-dimethoxyphenyl)methylidene]-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate —— C30H34N2O7S
    ethyl 5-(4-butoxy-3-methoxyphenyl)-2-[(3,4-dimethoxyphenyl)methylidene]-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate
    —— Ethyl 7-[(2-chloro-6-fluorophenyl)methoxy]-3-(2-methoxyphenyl)-4-oxochromene-2-carboxylate —— C26H20ClFO6
    Ethyl 7-[(2-chloro-6-fluorophenyl)methoxy]-3-(2-methoxyphenyl)-4-oxochromene-2-carboxylate
    —— Ethyl 7-[(3,4-dichlorophenyl)methoxy]-3-(4-methoxyphenyl)-4-oxochromene-2-carboxylate —— C26H20Cl2O6
    Ethyl 7-[(3,4-dichlorophenyl)methoxy]-3-(4-methoxyphenyl)-4-oxochromene-2-carboxylate
    —— (E)-4-[(2S)-2-(methylcarbamoyl)piperidin-1-yl]-4-oxobut-2-enoic acid —— C11H16N2O4
    (E)-4-[(2S)-2-(methylcarbamoyl)piperidin-1-yl]-4-oxobut-2-enoic acid
    —— (E)-4-[2-methoxyethyl-[(3R)-thiolan-3-yl]amino]-4-oxobut-2-enoic acid —— C11H17NO4S
    (E)-4-[2-methoxyethyl-[(3R)-thiolan-3-yl]amino]-4-oxobut-2-enoic acid
    —— ethyl 2-[(3,4-dimethoxyphenyl)methylidene]-7-methyl-3-oxo-5-(4-pentoxyphenyl)-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate —— C30H34N2O6S
    ethyl 2-[(3,4-dimethoxyphenyl)methylidene]-7-methyl-3-oxo-5-(4-pentoxyphenyl)-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate
    —— Ethyl 3-(4-bromophenyl)-7-[(2-chloro-6-fluorophenyl)methoxy]-4-oxochromene-2-carboxylate —— C25H17BrClFO5
    Ethyl 3-(4-bromophenyl)-7-[(2-chloro-6-fluorophenyl)methoxy]-4-oxochromene-2-carboxylate
    —— (E)-4-[methyl-[(1R,2S)-2-methylcyclohexyl]amino]-4-oxobut-2-enoic acid —— C12H19NO3
    (E)-4-[methyl-[(1R,2S)-2-methylcyclohexyl]amino]-4-oxobut-2-enoic acid
    —— Ethyl 3-(4-bromophenyl)-4-oxo-7-[(2,3,4,5,6-pentafluorophenyl)methoxy]chromene-2-carboxylate —— C25H14BrF5O5
    Ethyl 3-(4-bromophenyl)-4-oxo-7-[(2,3,4,5,6-pentafluorophenyl)methoxy]chromene-2-carboxylate
    —— ethyl 2-[(3,4-dimethoxyphenyl)methylidene]-7-methyl-3-oxo-5-(4-phenylmethoxyphenyl)-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate —— C32H30N2O6S
    ethyl 2-[(3,4-dimethoxyphenyl)methylidene]-7-methyl-3-oxo-5-(4-phenylmethoxyphenyl)-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate
    —— (E)-4-[[(1S)-1-(2,5-difluorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid —— C13H13F2NO3
    (E)-4-[[(1S)-1-(2,5-difluorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid
    —— Ethyl 7-[(2-chloro-6-fluorophenyl)methoxy]-3-(3,4-dimethoxyphenyl)-4-oxochromene-2-carboxylate —— C27H22ClFO7
    Ethyl 7-[(2-chloro-6-fluorophenyl)methoxy]-3-(3,4-dimethoxyphenyl)-4-oxochromene-2-carboxylate
    —— Ethyl 3-[[2-(2,4-dimethylanilino)acetyl]hydrazinylidene]-2-methylbutanoate —— C17H25N3O3
    Ethyl 3-[[2-(2,4-dimethylanilino)acetyl]hydrazinylidene]-2-methylbutanoate
    —— (E)-4-[methyl-[(1S)-1-(4-methylphenyl)ethyl]amino]-4-oxobut-2-enoic acid —— C14H17NO3
    (E)-4-[methyl-[(1S)-1-(4-methylphenyl)ethyl]amino]-4-oxobut-2-enoic acid
    —— Ethyl 3-(4-bromophenyl)-7-[(2-fluorophenyl)methoxy]-4-oxochromene-2-carboxylate —— C25H18BrFO5
    Ethyl 3-(4-bromophenyl)-7-[(2-fluorophenyl)methoxy]-4-oxochromene-2-carboxylate
    —— (E)-4-[[(1S)-1-(2-chlorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid —— C13H14ClNO3
    (E)-4-[[(1S)-1-(2-chlorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid
    —— (E)-4-[[(1S)-1-(2-methoxyphenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid —— C14H17NO4
    (E)-4-[[(1S)-1-(2-methoxyphenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid
    —— Ethyl 7-[(3,4-dichlorophenyl)methoxy]-3-(3,4-dimethoxyphenyl)-4-oxochromene-2-carboxylate —— C27H22Cl2O7
    Ethyl 7-[(3,4-dichlorophenyl)methoxy]-3-(3,4-dimethoxyphenyl)-4-oxochromene-2-carboxylate
    —— (E)-4-[[(1R)-1-(2,5-difluorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid —— C13H13F2NO3
    (E)-4-[[(1R)-1-(2,5-difluorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid
    —— (E)-4-[[(3S)-1,1-dioxothiolan-3-yl]-(2-hydroxyethyl)amino]-4-oxobut-2-enoic acid —— C10H15NO6S
    (E)-4-[[(3S)-1,1-dioxothiolan-3-yl]-(2-hydroxyethyl)amino]-4-oxobut-2-enoic acid
    —— Ethyl 3-(3,4-dimethoxyphenyl)-4-oxo-7-[(2,3,4,5,6-pentafluorophenyl)methoxy]chromene-2-carboxylate —— C27H19F5O7
    Ethyl 3-(3,4-dimethoxyphenyl)-4-oxo-7-[(2,3,4,5,6-pentafluorophenyl)methoxy]chromene-2-carboxylate
    —— ethyl (3S)-4-[(2S)-2-bromo-3-methylbutanoyl]thiomorpholine-3-carboxylate —— C12H20BrNO3S
    ethyl (3S)-4-[(2S)-2-bromo-3-methylbutanoyl]thiomorpholine-3-carboxylate
    —— ethyl (3R)-4-(5-chloropentanoyl)thiomorpholine-3-carboxylate —— C12H20ClNO3S
    ethyl (3R)-4-(5-chloropentanoyl)thiomorpholine-3-carboxylate
    —— Ethyl 3-(4-methoxyphenyl)-4-oxo-7-[(2,3,4,5,6-pentafluorophenyl)methoxy]chromene-2-carboxylate —— C26H17F5O6
    Ethyl 3-(4-methoxyphenyl)-4-oxo-7-[(2,3,4,5,6-pentafluorophenyl)methoxy]chromene-2-carboxylate
    —— ethyl (3S)-4-(5-chloropentanoyl)thiomorpholine-3-carboxylate —— C12H20ClNO3S
    ethyl (3S)-4-(5-chloropentanoyl)thiomorpholine-3-carboxylate
    —— (E)-4-[[(1R)-1-(2-methoxyphenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid —— C14H17NO4
    (E)-4-[[(1R)-1-(2-methoxyphenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid
    —— Ethyl 3-(4-bromophenyl)-7-[(2,4-dichlorophenyl)methoxy]-4-oxochromene-2-carboxylate —— C25H17BrCl2O5
    Ethyl 3-(4-bromophenyl)-7-[(2,4-dichlorophenyl)methoxy]-4-oxochromene-2-carboxylate
    —— ethyl 5-(4-butoxyphenyl)-2-[(3,4-dimethoxyphenyl)methylidene]-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate —— C29H32N2O6S
    ethyl 5-(4-butoxyphenyl)-2-[(3,4-dimethoxyphenyl)methylidene]-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate
    —— ethyl (3R)-4-[(2S)-2-bromo-3-methylbutanoyl]thiomorpholine-3-carboxylate —— C12H20BrNO3S
    ethyl (3R)-4-[(2S)-2-bromo-3-methylbutanoyl]thiomorpholine-3-carboxylate
    —— (E)-4-[(2R)-2-(cyclopropylcarbamoyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid —— C12H16N2O4
    (E)-4-[(2R)-2-(cyclopropylcarbamoyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid
    —— Ethyl 7-[(2,4-dichlorophenyl)methoxy]-3-(4-methoxyphenyl)-4-oxochromene-2-carboxylate —— C26H20Cl2O6
    Ethyl 7-[(2,4-dichlorophenyl)methoxy]-3-(4-methoxyphenyl)-4-oxochromene-2-carboxylate
    —— Ethyl 7-[(2,6-dichlorophenyl)methoxy]-3-(2-methoxyphenyl)-4-oxochromene-2-carboxylate —— C26H20Cl2O6
    Ethyl 7-[(2,6-dichlorophenyl)methoxy]-3-(2-methoxyphenyl)-4-oxochromene-2-carboxylate
    —— (E)-4-[methyl-[(1R,2R)-2-methylcyclohexyl]amino]-4-oxobut-2-enoic acid —— C12H19NO3
    (E)-4-[methyl-[(1R,2R)-2-methylcyclohexyl]amino]-4-oxobut-2-enoic acid
    —— Ethyl 7-[(2,4-dichlorophenyl)methoxy]-3-(3,4-dimethoxyphenyl)-4-oxochromene-2-carboxylate —— C27H22Cl2O7
    Ethyl 7-[(2,4-dichlorophenyl)methoxy]-3-(3,4-dimethoxyphenyl)-4-oxochromene-2-carboxylate
    —— Ethyl 7-[(2,6-dichlorophenyl)methoxy]-3-(3,4-dimethoxyphenyl)-4-oxochromene-2-carboxylate —— C27H22Cl2O7
    Ethyl 7-[(2,6-dichlorophenyl)methoxy]-3-(3,4-dimethoxyphenyl)-4-oxochromene-2-carboxylate
    —— (E)-4-[(2S)-2-(cyclopropylcarbamoyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid —— C12H16N2O4
    (E)-4-[(2S)-2-(cyclopropylcarbamoyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid
    —— (E)-4-[[(1S)-1-cyclopropylethyl]-(2,2,2-trifluoroethyl)amino]-4-oxobut-2-enoic acid —— C11H14F3NO3
    (E)-4-[[(1S)-1-cyclopropylethyl]-(2,2,2-trifluoroethyl)amino]-4-oxobut-2-enoic acid
    —— (E)-4-[[(1S)-1-(4-chlorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid —— C13H14ClNO3
    (E)-4-[[(1S)-1-(4-chlorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid
    —— ethyl 5-(3-methoxy-4-prop-2-enoxyphenyl)-7-methyl-3-oxo-2-(thiophen-2-ylmethylidene)-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate —— C25H24N2O5S2
    ethyl 5-(3-methoxy-4-prop-2-enoxyphenyl)-7-methyl-3-oxo-2-(thiophen-2-ylmethylidene)-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate
    —— Ethyl 2-[4-[hydroxy(phenyl)methylidene]-2,3-dioxo-5-(3-phenylmethoxyphenyl)pyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C31H26N2O6S
    Ethyl 2-[4-[hydroxy(phenyl)methylidene]-2,3-dioxo-5-(3-phenylmethoxyphenyl)pyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— Ethyl 3-(4-bromophenyl)-7-[(2,6-dichlorophenyl)methoxy]-4-oxochromene-2-carboxylate —— C25H17BrCl2O5
    Ethyl 3-(4-bromophenyl)-7-[(2,6-dichlorophenyl)methoxy]-4-oxochromene-2-carboxylate
    —— ethyl 2-[(3,4-dimethoxyphenyl)methylidene]-5-(4-ethoxyphenyl)-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate —— C27H28N2O6S
    ethyl 2-[(3,4-dimethoxyphenyl)methylidene]-5-(4-ethoxyphenyl)-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate
    —— (E)-4-oxo-4-[4-[[(2S)-oxolan-2-yl]methyl]piperazin-1-yl]but-2-enoic acid —— C13H20N2O4
    (E)-4-oxo-4-[4-[[(2S)-oxolan-2-yl]methyl]piperazin-1-yl]but-2-enoic acid
    —— (E)-4-[methyl-[[5-[(1S,2R)-2-methylcyclopropyl]furan-2-yl]methyl]amino]-4-oxobut-2-enoic acid —— C14H17NO4
    (E)-4-[methyl-[[5-[(1S,2R)-2-methylcyclopropyl]furan-2-yl]methyl]amino]-4-oxobut-2-enoic acid
    —— Ethyl 3-(4-bromophenyl)-7-[(3,4-dichlorophenyl)methoxy]-4-oxochromene-2-carboxylate —— C25H17BrCl2O5
    Ethyl 3-(4-bromophenyl)-7-[(3,4-dichlorophenyl)methoxy]-4-oxochromene-2-carboxylate
    —— (E)-4-[[(1R)-1-cyclopropylethyl]-(2,2,2-trifluoroethyl)amino]-4-oxobut-2-enoic acid —— C11H14F3NO3
    (E)-4-[[(1R)-1-cyclopropylethyl]-(2,2,2-trifluoroethyl)amino]-4-oxobut-2-enoic acid