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    —— (E)-4-oxo-4-[(3S)-3-[(sulfamoylamino)methyl]piperidin-1-yl]but-2-enoic acid —— C10H17N3O5S
    (E)-4-oxo-4-[(3S)-3-[(sulfamoylamino)methyl]piperidin-1-yl]but-2-enoic acid
    —— (E)-(S)-4-[(S)-2-((S)-2-Benzyloxycarbonylamino-4-methyl-pentanoylamino)-3-phenyl-propionylamino]-6-dimethylcarbamoyl-hex-2-enoic acid ethyl ester —— C34H46N4O7
    (E)-(S)-4-[(S)-2-((S)-2-Benzyloxycarbonylamino-4-methyl-pentanoylamino)-3-phenyl-propionylamino]-6-dimethylcarbamoyl-hex-2-enoic acid ethyl ester
    —— (E)-4-oxo-4-[(2R)-2-phenylmorpholin-4-yl]but-2-enoic acid —— C14H15NO4
    (E)-4-oxo-4-[(2R)-2-phenylmorpholin-4-yl]but-2-enoic acid
    —— (E)-4-[(2R)-2-(2-methylphenyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid —— C15H17NO3
    (E)-4-[(2R)-2-(2-methylphenyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid
    —— (E)-but-2-enedioic acid;N-(4-methoxy-13-methyl-11,15-diazatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2(7),3,5,8,12(17),13,15-octaen-16-yl)-N',N'-dimethylpropane-1,3-diamine —— C26H30N4O5
    (E)-but-2-enedioic acid;N-(4-methoxy-13-methyl-11,15-diazatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2(7),3,5,8,12(17),13,15-octaen-16-yl)-N',N'-dimethylpropane-1,3-diamine
    —— (E)-4-[ethyl-[(1R)-1-(4-fluorophenyl)ethyl]amino]-4-oxobut-2-enoic acid —— C14H16FNO3
    (E)-4-[ethyl-[(1R)-1-(4-fluorophenyl)ethyl]amino]-4-oxobut-2-enoic acid
    —— ethyl N-[(3S)-1-[(2S)-2-chloropropanoyl]piperidin-3-yl]carbamate —— C11H19ClN2O3
    ethyl N-[(3S)-1-[(2S)-2-chloropropanoyl]piperidin-3-yl]carbamate
    —— (E)-4-[(3S)-3-acetamidopiperidin-1-yl]-4-oxobut-2-enoic acid —— C11H16N2O4
    (E)-4-[(3S)-3-acetamidopiperidin-1-yl]-4-oxobut-2-enoic acid
    —— [(E)-3-hydroxy-3-methyl-but-1-enyl]phosphonic acid —— C5H10O4P-
    [(E)-3-hydroxy-3-methyl-but-1-enyl]phosphonic acid
    —— ethyl N-[(3R)-1-[(2S)-2-bromo-3-methylbutanoyl]piperidin-3-yl]carbamate —— C13H23BrN2O3
    ethyl N-[(3R)-1-[(2S)-2-bromo-3-methylbutanoyl]piperidin-3-yl]carbamate
    —— (E)-4-[ethyl-[(1S)-1-(4-fluorophenyl)ethyl]amino]-4-oxobut-2-enoic acid —— C14H16FNO3
    (E)-4-[ethyl-[(1S)-1-(4-fluorophenyl)ethyl]amino]-4-oxobut-2-enoic acid
    —— (E)-4-[(2S)-2-(3-chlorophenyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid —— C14H14ClNO3
    (E)-4-[(2S)-2-(3-chlorophenyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid
    —— [(E)-2-cyclohexylvinyl]cyclohexane; 1,2,3,4,5-pentamethylcyclopentane; ruthenium; trifluoromethanesulfonic acid —— C35H43F3O3Ru2S
    [(E)-2-cyclohexylvinyl]cyclohexane; 1,2,3,4,5-pentamethylcyclopentane; ruthenium; trifluoromethanesulfonic acid
    —— ethyl N-[(3S)-1-[(2S)-2-bromo-3-methylbutanoyl]piperidin-3-yl]carbamate —— C13H23BrN2O3
    ethyl N-[(3S)-1-[(2S)-2-bromo-3-methylbutanoyl]piperidin-3-yl]carbamate
    —— (E)-1-cyclopenta-2,4-dien-1-ylidene-3-(3-nitrophenyl)prop-2-en-1-ol —— C14H11NO3
    (E)-1-cyclopenta-2,4-dien-1-ylidene-3-(3-nitrophenyl)prop-2-en-1-ol
    —— (E)-but-2-enedioic acid;N',N'-dimethyl-N-(13-methyl-11,15-diazatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2,4,6,8,12(17),13,15-octaen-16-yl)propane-1,3-diamine —— C25H28N4O4
    (E)-but-2-enedioic acid;N',N'-dimethyl-N-(13-methyl-11,15-diazatetracyclo[8.7.0.02,7.012,17]heptadeca-1(10),2,4,6,8,12(17),13,15-octaen-16-yl)propane-1,3-diamine
    —— ethyl N-[(3R)-1-[(2S)-2-chloropropanoyl]piperidin-3-yl]carbamate —— C11H19ClN2O3
    ethyl N-[(3R)-1-[(2S)-2-chloropropanoyl]piperidin-3-yl]carbamate
    —— (E)-4-[(2R)-2-(3-chlorophenyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid —— C14H14ClNO3
    (E)-4-[(2R)-2-(3-chlorophenyl)pyrrolidin-1-yl]-4-oxobut-2-enoic acid
    —— ethyl N-[(3S)-1-(5-chloropentanoyl)piperidin-3-yl]carbamate —— C13H23ClN2O3
    ethyl N-[(3S)-1-(5-chloropentanoyl)piperidin-3-yl]carbamate
    —— [(E)-benzylideneamino]-[(2-oxoniophenyl)-oxoniumylidenemethyl]azanide;zinc;hydrate —— C14H15N2O3Zn+
    [(E)-benzylideneamino]-[(2-oxoniophenyl)-oxoniumylidenemethyl]azanide;zinc;hydrate
    —— (E)-2-(benzotriazol-1-yl)-3-(2,4-difluorophenyl)prop-2-enenitrile —— C15H8F2N4
    (E)-2-(benzotriazol-1-yl)-3-(2,4-difluorophenyl)prop-2-enenitrile
    —— (E)-4-[(9aS)-1,3,4,6,7,8,9,9a-octahydropyrido[1,2-a]pyrazin-2-yl]-4-oxobut-2-enoic acid —— C12H18N2O3
    (E)-4-[(9aS)-1,3,4,6,7,8,9,9a-octahydropyrido[1,2-a]pyrazin-2-yl]-4-oxobut-2-enoic acid
    —— [(E)-but-2-enoxy]methylbenzene;carbon monoxide;chromium —— C16H14CrO6
    [(E)-but-2-enoxy]methylbenzene;carbon monoxide;chromium
    —— (E)-4-[(4S)-4-ethyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]-4-oxobut-2-enoic acid —— C13H15NO3S
    (E)-4-[(4S)-4-ethyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]-4-oxobut-2-enoic acid
    —— (E)-but-2-enedioic acid;N-(2,17-dimethyl-6,13,17-triazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),2,4,6,8,11(16),12,14-octaen-7-yl)-N',N'-diethylpropane-1,3-diamine —— C27H33N5O4
    (E)-but-2-enedioic acid;N-(2,17-dimethyl-6,13,17-triazatetracyclo[8.7.0.03,8.011,16]heptadeca-1(10),2,4,6,8,11(16),12,14-octaen-7-yl)-N',N'-diethylpropane-1,3-diamine
    —— ethyl 2-[[(2S)-2-bromo-3-methylbutanoyl]-(2-methylpropyl)amino]acetate —— C13H24BrNO3
    ethyl 2-[[(2S)-2-bromo-3-methylbutanoyl]-(2-methylpropyl)amino]acetate
    —— ethyl 2-[(6Z)-6-[(2,3-dichlorophenyl)methylene]-5-oxo-thiazolo[2,3-b]thiazol-4-ium-3-yl]acetate —— C16H12Cl2NO3S2+
    ethyl 2-[(6Z)-6-[(2,3-dichlorophenyl)methylene]-5-oxo-thiazolo[2,3-b]thiazol-4-ium-3-yl]acetate
    —— ethyl 2-[[(2R)-2-bromo-3-methylbutanoyl]-(2-methylpropyl)amino]acetate —— C13H24BrNO3
    ethyl 2-[[(2R)-2-bromo-3-methylbutanoyl]-(2-methylpropyl)amino]acetate
    —— ethyl (3R)-4-[(2R)-2-bromo-3-methylbutanoyl]thiomorpholine-3-carboxylate —— C12H20BrNO3S
    ethyl (3R)-4-[(2R)-2-bromo-3-methylbutanoyl]thiomorpholine-3-carboxylate
    —— ethyl (4Z)-4-[[(5Z)-5-[(3-hydroxyphenyl)methylene]-4-oxo-2-thioxo-thiazolidin-3-yl]methylene]-5-oxo-1-phenyl-pyrazole-3-carboxylate —— C23H17N3O5S2
    ethyl (4Z)-4-[[(5Z)-5-[(3-hydroxyphenyl)methylene]-4-oxo-2-thioxo-thiazolidin-3-yl]methylene]-5-oxo-1-phenyl-pyrazole-3-carboxylate
    —— (E)-4-[(3R)-3-(methanesulfonamido)piperidin-1-yl]-4-oxobut-2-enoic acid —— C10H16N2O5S
    (E)-4-[(3R)-3-(methanesulfonamido)piperidin-1-yl]-4-oxobut-2-enoic acid
    —— (E)-4-oxo-4-[4-[[(2R)-oxolan-2-yl]methyl]piperazin-1-yl]but-2-enoic acid —— C13H20N2O4
    (E)-4-oxo-4-[4-[[(2R)-oxolan-2-yl]methyl]piperazin-1-yl]but-2-enoic acid
    —— (E)-4-[[(1R)-1-(4-chlorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid —— C13H14ClNO3
    (E)-4-[[(1R)-1-(4-chlorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid
    —— (E)-4-[methyl-[(1S,2R)-2-methylcyclohexyl]amino]-4-oxobut-2-enoic acid —— C12H19NO3
    (E)-4-[methyl-[(1S,2R)-2-methylcyclohexyl]amino]-4-oxobut-2-enoic acid
    —— (E)-N,N'-bis[4-(1H-benzimidazol-2-yl)phenyl]hex-2-enediamide —— C32H26N6O2
    (E)-N,N'-bis[4-(1H-benzimidazol-2-yl)phenyl]hex-2-enediamide
    —— (E)-6-(5-methyl-2,4-dioxo-pyrimidin-1-yl)-2,2-diphenyl-hex-4-enoic acid —— C23H22N2O4
    (E)-6-(5-methyl-2,4-dioxo-pyrimidin-1-yl)-2,2-diphenyl-hex-4-enoic acid
    —— Ethyl 5-((tert-butyl(dimethyl)silyl)oxy)-4-hydroxy-2,6-octadienoate —— C16H30O4Si
    Ethyl 5-((tert-butyl(dimethyl)silyl)oxy)-4-hydroxy-2,6-octadienoate
    —— ethyl 4,5-dimethoxy-15-[(Z)-2-methoxyethenyl]-11,12-dioxo-15-trimethylsilyloxy-10-azatetracyclo[8.5.0.01,13.02,7]pentadeca-2,4,6-triene-13-carboxylate —— C25H33NO8Si
    ethyl 4,5-dimethoxy-15-[(Z)-2-methoxyethenyl]-11,12-dioxo-15-trimethylsilyloxy-10-azatetracyclo[8.5.0.01,13.02,7]pentadeca-2,4,6-triene-13-carboxylate
    —— (E)-4-[(2R)-2-methoxycarbonylpiperidin-1-yl]-4-oxobut-2-enoic acid —— C11H15NO5
    (E)-4-[(2R)-2-methoxycarbonylpiperidin-1-yl]-4-oxobut-2-enoic acid
    —— (E)-4-[[(1S)-1-(2-fluorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid —— C13H14FNO3
    (E)-4-[[(1S)-1-(2-fluorophenyl)ethyl]-methylamino]-4-oxobut-2-enoic acid
    —— [(E)-4-(5-methyl-2,4-dioxo-pyrimidin-1-yl)but-2-enyl] hexanoate —— C15H22N2O4
    [(E)-4-(5-methyl-2,4-dioxo-pyrimidin-1-yl)but-2-enyl] hexanoate
    —— (E)-4-[methyl-[(1R)-1-(4-methylphenyl)ethyl]amino]-4-oxobut-2-enoic acid —— C14H17NO3
    (E)-4-[methyl-[(1R)-1-(4-methylphenyl)ethyl]amino]-4-oxobut-2-enoic acid
    —— ethyl (3S)-4-[(2R)-2-bromo-3-methylbutanoyl]thiomorpholine-3-carboxylate —— C12H20BrNO3S
    ethyl (3S)-4-[(2R)-2-bromo-3-methylbutanoyl]thiomorpholine-3-carboxylate
    —— (E)-4-oxo-4-[(2S)-2-thiophen-2-ylpyrrolidin-1-yl]but-2-enoic acid —— C12H13NO3S
    (E)-4-oxo-4-[(2S)-2-thiophen-2-ylpyrrolidin-1-yl]but-2-enoic acid
    —— (E)-2-(2,2-dimethoxyethyl)-N-(2-iodophenyl)-4-triisopropylsilyloxy-N-(2-trimethylsilylethoxymethyl)but-2-enamide —— C29H52INO5Si2
    (E)-2-(2,2-dimethoxyethyl)-N-(2-iodophenyl)-4-triisopropylsilyloxy-N-(2-trimethylsilylethoxymethyl)but-2-enamide
    —— Ethyl 3-butyl-6-(tetrahydro-2H-pyran-2-yloxy)-2,4-hexadienoate —— C17H28O4
    Ethyl 3-butyl-6-(tetrahydro-2H-pyran-2-yloxy)-2,4-hexadienoate
    —— (E)-3-[4-[bis(2-cyanoethyl)amino]phenyl]-2-cyano-N-[(E)-1-[7-[(4-ethoxyphenyl)diazenyl]-2-oxochromen-3-yl]ethylideneamino]prop-2-enamide —— C35H30N8O4
    (E)-3-[4-[bis(2-cyanoethyl)amino]phenyl]-2-cyano-N-[(E)-1-[7-[(4-ethoxyphenyl)diazenyl]-2-oxochromen-3-yl]ethylideneamino]prop-2-enamide
    —— (E)-4-[[(3R)-1,1-dioxothiolan-3-yl]-(2-hydroxyethyl)amino]-4-oxobut-2-enoic acid —— C10H15NO6S
    (E)-4-[[(3R)-1,1-dioxothiolan-3-yl]-(2-hydroxyethyl)amino]-4-oxobut-2-enoic acid
    —— Ethyl 4,4,4-trifluoro-3-((triphenylphosphoranylidene)amino)-2-butenoate —— C24H21F3NO2P
    Ethyl 4,4,4-trifluoro-3-((triphenylphosphoranylidene)amino)-2-butenoate
    —— [(E)-4-(5-methyl-2,4-dioxo-pyrimidin-1-yl)but-2-enyl] 2,2-dimethylpropanoate —— C14H20N2O4
    [(E)-4-(5-methyl-2,4-dioxo-pyrimidin-1-yl)but-2-enyl] 2,2-dimethylpropanoate