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    首页 分子通 按分子结构分类 有机化合物 有机杂环化合物 吡咯烷类

    吡咯烷类

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 1-(4-Methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(pyridin-2-ylmethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C28H24N4O8
    1-(4-Methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(pyridin-2-ylmethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-(3-Bromophenyl)-4-[(3-fluoro-4-methylphenyl)-hydroxymethylidene]-1-(furan-2-ylmethyl)pyrrolidine-2,3-dione —— C23H17BrFNO4
    5-(3-Bromophenyl)-4-[(3-fluoro-4-methylphenyl)-hydroxymethylidene]-1-(furan-2-ylmethyl)pyrrolidine-2,3-dione
    —— 5-(3-Chloro-4-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1-[4-(trifluoromethyl)phenyl]-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H24ClF3N2O4
    5-(3-Chloro-4-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1-[4-(trifluoromethyl)phenyl]-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(4-Methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-pyridin-2-ylethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H26N4O8
    1-(4-Methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-pyridin-2-ylethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-But-2-enyl-1-(4-methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C26H25N3O8
    5-But-2-enyl-1-(4-methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(4-Methoxycarbonylphenyl)-5-[2-(4-methyl-1,3-thiazol-5-yl)ethyl]-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C28H26N4O8S
    1-(4-Methoxycarbonylphenyl)-5-[2-(4-methyl-1,3-thiazol-5-yl)ethyl]-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(4-Methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-phenoxyethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C30H27N3O9
    1-(4-Methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-phenoxyethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 4-(1,3-dioxo-1,3,3a,4,7,7a-hexahydro-2H-4,7-methanoisoindol-2-yl)benzonitrile —— C16H12N2O2
    4-(1,3-dioxo-1,3,3a,4,7,7a-hexahydro-2H-4,7-methanoisoindol-2-yl)benzonitrile
    —— 5-(2-Anilinoethyl)-1-(4-methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C30H28N4O8
    5-(2-Anilinoethyl)-1-(4-methoxycarbonylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-(3-Bromo-4-hydroxy-5-methoxyphenyl)-4-[(3-fluoro-4-methylphenyl)-hydroxymethylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione —— C25H23BrFN3O5
    5-(3-Bromo-4-hydroxy-5-methoxyphenyl)-4-[(3-fluoro-4-methylphenyl)-hydroxymethylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione
    —— 1-(2-Methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-propoxyethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C26H29N3O7
    1-(2-Methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-propoxyethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-propoxyethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C26H29N3O8
    1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-propoxyethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-prop-2-ynyl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C24H21N3O7
    1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-prop-2-ynyl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— [1-[2-(diethylazaniumyl)ethyl]-2-(2-fluorophenyl)-4,5-dioxopyrrolidin-3-ylidene]-(3-methyl-4-prop-2-enoxyphenyl)methanolate —— C27H31FN2O4
    [1-[2-(diethylazaniumyl)ethyl]-2-(2-fluorophenyl)-4,5-dioxopyrrolidin-3-ylidene]-(3-methyl-4-prop-2-enoxyphenyl)methanolate
    —— 1-(2-Methylphenyl)-5-[(5-nitrofuran-2-yl)methyl]-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C26H22N4O9
    1-(2-Methylphenyl)-5-[(5-nitrofuran-2-yl)methyl]-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-But-3-ynyl-1-(2-methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H23N3O6
    5-But-3-ynyl-1-(2-methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-But-3-enyl-1-(2-methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H25N3O6
    5-But-3-enyl-1-(2-methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-(2-Anilinoethyl)-1-(2-methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H28N4O7
    5-(2-Anilinoethyl)-1-(2-methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-phenylsulfanylethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H27N3O7S
    1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-phenylsulfanylethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(2-Methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-pyridin-2-ylethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C28H26N4O6
    1-(2-Methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(2-pyridin-2-ylethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(pyridin-2-ylmethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H24N4O7
    1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(pyridin-2-ylmethyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(2-Methoxyphenyl)-5-(naphthalen-1-ylmethyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C32H27N3O7
    1-(2-Methoxyphenyl)-5-(naphthalen-1-ylmethyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(3-phenylprop-2-enyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C30H27N3O7
    1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-5-(3-phenylprop-2-enyl)-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— N-[4-(2-oxopyrrolidin-1-yl)phenyl]-2-[[5-(2-phenylethylamino)-1,3,4-thiadiazol-2-yl]sulfanyl]acetamide —— C22H23N5O2S2
    N-[4-(2-oxopyrrolidin-1-yl)phenyl]-2-[[5-(2-phenylethylamino)-1,3,4-thiadiazol-2-yl]sulfanyl]acetamide
    —— 1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-5-oct-3-enyl-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H33N3O7
    1-(2-Methoxyphenyl)-3-[(4-nitrophenyl)methyl]-5-oct-3-enyl-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-Tert-butyl-1-(3-hydroxy-4-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C22H30N2O6
    5-Tert-butyl-1-(3-hydroxy-4-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 3-(3-Butoxypropyl)-2-(4-pyrrolidin-1-ylphenyl)-1,3-thiazolidin-4-one —— C20H30N2O2S
    3-(3-Butoxypropyl)-2-(4-pyrrolidin-1-ylphenyl)-1,3-thiazolidin-4-one
    —— N-[[1-(2,3-dihydro-1,4-benzodioxin-6-yl)cyclopentyl]methyl]-2-[4-(2-oxopyrrolidin-1-yl)phenyl]acetamide —— C26H30N2O4
    N-[[1-(2,3-dihydro-1,4-benzodioxin-6-yl)cyclopentyl]methyl]-2-[4-(2-oxopyrrolidin-1-yl)phenyl]acetamide
    —— 5-Benzyl-1-(3-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H28N2O4
    5-Benzyl-1-(3-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(2-Methylphenyl)-5-(3-nitrophenyl)-4,6-dioxo-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C23H23N3O6
    1-(2-Methylphenyl)-5-(3-nitrophenyl)-4,6-dioxo-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 4-[(3,4-Dimethoxyphenyl)-hydroxymethylidene]-5-(4-pentoxyphenyl)-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione —— C30H32N2O6
    4-[(3,4-Dimethoxyphenyl)-hydroxymethylidene]-5-(4-pentoxyphenyl)-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione
    —— 5-Benzyl-4,6-dioxo-1-phenyl-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C23H24N2O4
    5-Benzyl-4,6-dioxo-1-phenyl-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-Cyclohexyl-3-(2-methylpropyl)-4,6-dioxo-1-[3-(trifluoromethyl)phenyl]-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C24H29F3N2O4
    5-Cyclohexyl-3-(2-methylpropyl)-4,6-dioxo-1-[3-(trifluoromethyl)phenyl]-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-(3-Chloro-4-methylphenyl)-4,6-dioxo-3-propan-2-yl-1-pyridin-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C22H22ClN3O4
    5-(3-Chloro-4-methylphenyl)-4,6-dioxo-3-propan-2-yl-1-pyridin-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-Butyl-1-(3-chlorophenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C21H27ClN2O4
    5-Butyl-1-(3-chlorophenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(3-Hydroxy-4-methoxyphenyl)-5-methyl-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C19H24N2O6
    1-(3-Hydroxy-4-methoxyphenyl)-5-methyl-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-Cyclohexyl-3-(2-methylpropyl)-4,6-dioxo-1-[4-(trifluoromethyl)phenyl]-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C24H29F3N2O4
    5-Cyclohexyl-3-(2-methylpropyl)-4,6-dioxo-1-[4-(trifluoromethyl)phenyl]-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1,5-Bis(2-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H28N2O4
    1,5-Bis(2-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(4-Methoxycarbonylphenyl)-4,6-dioxo-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C18H20N2O6
    1-(4-Methoxycarbonylphenyl)-4,6-dioxo-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-Benzyl-1-(4-chlorophenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C24H25ClN2O4
    5-Benzyl-1-(4-chlorophenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(3-Methoxyphenyl)-4,6-dioxo-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C17H20N2O5
    1-(3-Methoxyphenyl)-4,6-dioxo-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(Furan-2-yl)-5-(3-nitrophenyl)-4,6-dioxo-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C20H19N3O7
    1-(Furan-2-yl)-5-(3-nitrophenyl)-4,6-dioxo-3-propan-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-[(4-Methoxycarbonylphenyl)methyl]-1-(3-methoxy-2-phenylmethoxyphenyl)-3-(2-methylsulfanylethyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C33H34N2O8S
    5-[(4-Methoxycarbonylphenyl)methyl]-1-(3-methoxy-2-phenylmethoxyphenyl)-3-(2-methylsulfanylethyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-(3-Methoxy-2-phenylmethoxyphenyl)-3-(2-methylsulfanylethyl)-5-oct-3-enyl-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C32H40N2O6S
    1-(3-Methoxy-2-phenylmethoxyphenyl)-3-(2-methylsulfanylethyl)-5-oct-3-enyl-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 2-Methylpropyl 2-[3-[(4-butoxyphenyl)-hydroxymethylidene]-2-(3-fluorophenyl)-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C30H31FN2O6S
    2-Methylpropyl 2-[3-[(4-butoxyphenyl)-hydroxymethylidene]-2-(3-fluorophenyl)-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— 1-(5-chloro-2-nitrophenyl)-5-[2-(2-methyl-4-nitro-4H-imidazol-3-ium-3-yl)ethyl]-3-(2-methylsulfanylethyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C22H24ClN6O8S+
    1-(5-chloro-2-nitrophenyl)-5-[2-(2-methyl-4-nitro-4H-imidazol-3-ium-3-yl)ethyl]-3-(2-methylsulfanylethyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— N-[(2S)-2-(1H-indol-3-yl)-2-phenylethyl]-2-[4-(2-oxopyrrolidin-1-yl)phenyl]acetamide —— C28H27N3O2
    N-[(2S)-2-(1H-indol-3-yl)-2-phenylethyl]-2-[4-(2-oxopyrrolidin-1-yl)phenyl]acetamide
    —— [2-oxo-2-[3-(2-oxopyrrolidin-1-yl)anilino]ethyl] 5-(2-chloro-4-nitrophenyl)furan-2-carboxylate —— C23H18ClN3O7
    [2-oxo-2-[3-(2-oxopyrrolidin-1-yl)anilino]ethyl] 5-(2-chloro-4-nitrophenyl)furan-2-carboxylate
    —— [1-[2-(Dimethylazaniumyl)ethyl]-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]-(4-methoxy-2-methylphenyl)methanolate —— C23H25N3O6
    [1-[2-(Dimethylazaniumyl)ethyl]-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]-(4-methoxy-2-methylphenyl)methanolate
    —— 5-(4-Ethoxyphenyl)-4-[(3-fluoro-4-methylphenyl)-hydroxymethylidene]-1-(furan-2-ylmethyl)pyrrolidine-2,3-dione —— C25H22FNO5
    5-(4-Ethoxyphenyl)-4-[(3-fluoro-4-methylphenyl)-hydroxymethylidene]-1-(furan-2-ylmethyl)pyrrolidine-2,3-dione