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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-Fluorophenyl)sulfonyl-3-[4-pyrrolidin-1-yl-3-(trifluoromethyl)phenyl]urea —— C18H17F4N3O3S
    1-(4-Fluorophenyl)sulfonyl-3-[4-pyrrolidin-1-yl-3-(trifluoromethyl)phenyl]urea
    —— (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(4-ethoxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O4S
    (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(4-ethoxyphenyl)pyrrolidine-2,3-dione
    —— (5R)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(2,4-dimethoxyphenyl)-1-(2-methylpropyl)pyrrolidine-2,3-dione —— C23H24ClNO5
    (5R)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(2,4-dimethoxyphenyl)-1-(2-methylpropyl)pyrrolidine-2,3-dione
    —— (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(4-hydroxyphenyl)pyrrolidine-2,3-dione —— C24H15ClN2O4S
    (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(4-hydroxyphenyl)pyrrolidine-2,3-dione
    —— (5S)-5-[4-(dimethylamino)phenyl]-4-[hydroxy-(4-methoxyphenyl)methylidene]-1-(6-methylpyridin-2-yl)pyrrolidine-2,3-dione —— C26H25N3O4
    (5S)-5-[4-(dimethylamino)phenyl]-4-[hydroxy-(4-methoxyphenyl)methylidene]-1-(6-methylpyridin-2-yl)pyrrolidine-2,3-dione
    —— (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(2,5-dimethoxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O5S
    (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(2,5-dimethoxyphenyl)pyrrolidine-2,3-dione
    —— (5S)-5-(2,4-dimethoxyphenyl)-4-[hydroxy-(4-methylphenyl)methylidene]-1-pyridin-3-ylpyrrolidine-2,3-dione —— C25H22N2O5
    (5S)-5-(2,4-dimethoxyphenyl)-4-[hydroxy-(4-methylphenyl)methylidene]-1-pyridin-3-ylpyrrolidine-2,3-dione
    —— 4-chloro-N-[(3R)-2,5-dioxo-1-phenylpyrrolidin-3-yl]-N-[2-(4-methoxyphenyl)ethyl]benzamide —— C26H23ClN2O4
    4-chloro-N-[(3R)-2,5-dioxo-1-phenylpyrrolidin-3-yl]-N-[2-(4-methoxyphenyl)ethyl]benzamide
    —— (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-ethoxy-4-hydroxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O5S
    (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-ethoxy-4-hydroxyphenyl)pyrrolidine-2,3-dione
    —— (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-methoxyphenyl)pyrrolidine-2,3-dione —— C25H17ClN2O4S
    (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-methoxyphenyl)pyrrolidine-2,3-dione
    —— (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(4-ethoxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O4S
    (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(4-ethoxyphenyl)pyrrolidine-2,3-dione
    —— N-(1,3-benzodioxol-5-ylmethyl)-4-chloro-N-[(3R)-1-(4-methoxyphenyl)-2,5-dioxopyrrolidin-3-yl]benzamide —— C26H21ClN2O6
    N-(1,3-benzodioxol-5-ylmethyl)-4-chloro-N-[(3R)-1-(4-methoxyphenyl)-2,5-dioxopyrrolidin-3-yl]benzamide
    —— (5R)-5-[4-(dimethylamino)phenyl]-4-[hydroxy-(4-methoxyphenyl)methylidene]-1-(6-methylpyridin-2-yl)pyrrolidine-2,3-dione —— C26H25N3O4
    (5R)-5-[4-(dimethylamino)phenyl]-4-[hydroxy-(4-methoxyphenyl)methylidene]-1-(6-methylpyridin-2-yl)pyrrolidine-2,3-dione
    —— methyl 4-[(2R)-1-(1,3-benzothiazol-2-yl)-3-[(4-chlorophenyl)-hydroxymethylidene]-4,5-dioxopyrrolidin-2-yl]benzoate —— C26H17ClN2O5S
    methyl 4-[(2R)-1-(1,3-benzothiazol-2-yl)-3-[(4-chlorophenyl)-hydroxymethylidene]-4,5-dioxopyrrolidin-2-yl]benzoate
    —— (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-methoxyphenyl)pyrrolidine-2,3-dione —— C25H17ClN2O4S
    (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-methoxyphenyl)pyrrolidine-2,3-dione
    —— (5R)-5-(2,4-dimethoxyphenyl)-4-[hydroxy-(4-methylphenyl)methylidene]-1-pyridin-3-ylpyrrolidine-2,3-dione —— C25H22N2O5
    (5R)-5-(2,4-dimethoxyphenyl)-4-[hydroxy-(4-methylphenyl)methylidene]-1-pyridin-3-ylpyrrolidine-2,3-dione
    —— N-[(3S)-1-(4-chlorophenyl)-2,5-dioxopyrrolidin-3-yl]-3-fluoro-N-(2-phenylethyl)benzamide —— C25H20ClFN2O3
    N-[(3S)-1-(4-chlorophenyl)-2,5-dioxopyrrolidin-3-yl]-3-fluoro-N-(2-phenylethyl)benzamide
    —— (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-fluorophenyl)pyrrolidine-2,3-dione —— C24H14ClFN2O3S
    (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-fluorophenyl)pyrrolidine-2,3-dione
    —— (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-fluorophenyl)pyrrolidine-2,3-dione —— C24H14ClFN2O3S
    (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-fluorophenyl)pyrrolidine-2,3-dione
    —— (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(2,4-dimethoxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O5S
    (5S)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(2,4-dimethoxyphenyl)pyrrolidine-2,3-dione
    —— methyl 4-[(2S)-1-(1,3-benzothiazol-2-yl)-3-[(4-chlorophenyl)-hydroxymethylidene]-4,5-dioxopyrrolidin-2-yl]benzoate —— C26H17ClN2O5S
    methyl 4-[(2S)-1-(1,3-benzothiazol-2-yl)-3-[(4-chlorophenyl)-hydroxymethylidene]-4,5-dioxopyrrolidin-2-yl]benzoate
    —— (1R,3S,3aR,6aS)-3-benzyl-5-(2,4-dichlorophenyl)-1-(2-fluorophenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C26H19Cl2FN2O4
    (1R,3S,3aR,6aS)-3-benzyl-5-(2,4-dichlorophenyl)-1-(2-fluorophenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3S,3aR,6aR)-3-benzyl-5-(2-methoxyphenyl)-1-(4-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C28H26N2O6
    (1S,3S,3aR,6aR)-3-benzyl-5-(2-methoxyphenyl)-1-(4-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(2,4-dimethoxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O5S
    (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(2,4-dimethoxyphenyl)pyrrolidine-2,3-dione
    —— (1R,3R,3aR,6aR)-3-benzyl-1-(2-fluorophenyl)-5-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H23FN2O4
    (1R,3R,3aR,6aR)-3-benzyl-1-(2-fluorophenyl)-5-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3R,3aR,6aR)-3-benzyl-5-(4-ethoxyphenyl)-1-(4-fluorophenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C28H25FN2O5
    (1S,3R,3aR,6aR)-3-benzyl-5-(4-ethoxyphenyl)-1-(4-fluorophenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aS)-5-(2,4-dichlorophenyl)-1-(2-fluorophenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C23H21Cl2FN2O4
    (1R,3R,3aR,6aS)-5-(2,4-dichlorophenyl)-1-(2-fluorophenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aS)-5-(2-methoxyphenyl)-1-(4-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H28N2O6
    (1R,3R,3aR,6aS)-5-(2-methoxyphenyl)-1-(4-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3S,3aR,6aR)-3-benzyl-1-(3,4-dimethoxyphenyl)-5-(4-fluorophenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C28H25FN2O6
    (1R,3S,3aR,6aR)-3-benzyl-1-(3,4-dimethoxyphenyl)-5-(4-fluorophenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3R,3aR,6aR)-3-benzyl-1-(3,4-dimethoxyphenyl)-5-(2-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H28N2O7
    (1S,3R,3aR,6aR)-3-benzyl-1-(3,4-dimethoxyphenyl)-5-(2-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3S,3aR,6aR)-3-benzyl-5-(2-methoxyphenyl)-1-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C28H26N2O5
    (1R,3S,3aR,6aR)-3-benzyl-5-(2-methoxyphenyl)-1-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aR)-3-benzyl-1-(3,4-dimethoxyphenyl)-5-(2-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H28N2O7
    (1R,3R,3aR,6aR)-3-benzyl-1-(3,4-dimethoxyphenyl)-5-(2-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3S,3aR,6aR)-5-(2-methoxyphenyl)-1-(4-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H28N2O5
    (1R,3S,3aR,6aR)-5-(2-methoxyphenyl)-1-(4-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3S,3aR,6aR)-5-(2-methoxyphenyl)-1-(4-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H28N2O5
    (1S,3S,3aR,6aR)-5-(2-methoxyphenyl)-1-(4-methylphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aR)-3-benzyl-5-(4-ethoxyphenyl)-1-(4-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H28N2O6
    (1R,3R,3aR,6aR)-3-benzyl-5-(4-ethoxyphenyl)-1-(4-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aR)-3-benzyl-5-(2-methoxyphenyl)-4,6-dioxo-1-thiophen-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H22N2O5S
    (1R,3R,3aR,6aR)-3-benzyl-5-(2-methoxyphenyl)-4,6-dioxo-1-thiophen-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3S,3aR,6aR)-3-benzyl-5-(2,4-dichlorophenyl)-1-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H22Cl2N2O4
    (1R,3S,3aR,6aR)-3-benzyl-5-(2,4-dichlorophenyl)-1-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3S,3aR,6aS)-1-(2,4-dimethoxyphenyl)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C26H30N2O7
    (1R,3S,3aR,6aS)-1-(2,4-dimethoxyphenyl)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3S,3aR,6aR)-3-benzyl-5-(4-fluorophenyl)-1-(4-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H23FN2O5
    (1S,3S,3aR,6aR)-3-benzyl-5-(4-fluorophenyl)-1-(4-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3R,3aR,6aR)-3-benzyl-5-(2-methoxyphenyl)-4,6-dioxo-1-thiophen-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C25H22N2O5S
    (1S,3R,3aR,6aR)-3-benzyl-5-(2-methoxyphenyl)-4,6-dioxo-1-thiophen-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3R,3aR,6aR)-3-benzyl-1-(2-fluorophenyl)-5-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H23FN2O4
    (1S,3R,3aR,6aR)-3-benzyl-1-(2-fluorophenyl)-5-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aS)-1-(2-fluorophenyl)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C24H25FN2O5
    (1R,3R,3aR,6aS)-1-(2-fluorophenyl)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3S,3aR,6aR)-3-benzyl-5-(2,4-dichlorophenyl)-1-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H22Cl2N2O4
    (1S,3S,3aR,6aR)-3-benzyl-5-(2,4-dichlorophenyl)-1-(4-methylphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aS)-1-(3,4-dimethoxyphenyl)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C26H30N2O7
    (1R,3R,3aR,6aS)-1-(3,4-dimethoxyphenyl)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aS)-1-(4-fluorophenyl)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C24H25FN2O5
    (1R,3R,3aR,6aS)-1-(4-fluorophenyl)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3S,3aR,6aR)-3-benzyl-5-(4-fluorophenyl)-1-(4-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H23FN2O5
    (1R,3S,3aR,6aR)-3-benzyl-5-(4-fluorophenyl)-1-(4-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1S,3R,3aR,6aR)-3-benzyl-1-(4-fluorophenyl)-5-(2-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H23FN2O5
    (1S,3R,3aR,6aR)-3-benzyl-1-(4-fluorophenyl)-5-(2-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (1R,3R,3aR,6aR)-3-benzyl-1-(2-chlorophenyl)-5-(2-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C27H23ClN2O5
    (1R,3R,3aR,6aR)-3-benzyl-1-(2-chlorophenyl)-5-(2-methoxyphenyl)-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-hydroxyphenyl)pyrrolidine-2,3-dione —— C24H15ClN2O4S
    (5R)-1-(1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-hydroxyphenyl)pyrrolidine-2,3-dione
    —— (1R,3R,3aR,6aS)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1-thiophen-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C22H24N2O5S
    (1R,3R,3aR,6aS)-5-(2-methoxyphenyl)-3-(2-methylpropyl)-4,6-dioxo-1-thiophen-2-yl-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid