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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
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-5-(4-methylphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O4S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-5-(4-methylphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-[2-(diethylamino)ethyl]-4-[(4-ethoxy-2-methylphenyl)-hydroxymethylidene]-5-(4-pentoxyphenyl)pyrrolidine-2,3-dione —— C31H42N2O5
    (4E)-1-[2-(diethylamino)ethyl]-4-[(4-ethoxy-2-methylphenyl)-hydroxymethylidene]-5-(4-pentoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-5-(3-butoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(1,3-thiazol-2-yl)pyrrolidine-2,3-dione —— C27H28N2O5S
    (4E)-5-(3-butoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(1,3-thiazol-2-yl)pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione —— C31H37N3O6
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(4-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C29H23ClN2O5S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(4-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-5-(4-methoxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O5S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-5-(4-methoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C34H34ClN3O6S2
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-tert-butylphenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C29H25ClN2O4S
    (4E)-5-(4-tert-butylphenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(pyridin-4-ylmethyl)pyrrolidine-2,3-dione —— C31H34N2O6
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(pyridin-4-ylmethyl)pyrrolidine-2,3-dione
    —— (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(4-methoxy-3-methylphenyl)methylidene]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione —— C31H42N2O6
    (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(4-methoxy-3-methylphenyl)methylidene]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione
    —— (4E)-1-[3-(diethylamino)propyl]-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C33H46N2O6
    (4E)-1-[3-(diethylamino)propyl]-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— methyl 2-[(3E)-2-(3,4-diethoxyphenyl)-3-[(4-ethoxyphenyl)-hydroxymethylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C29H30N2O8S
    methyl 2-[(3E)-2-(3,4-diethoxyphenyl)-3-[(4-ethoxyphenyl)-hydroxymethylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(3-methoxypropyl)-5-(3-pentoxyphenyl)pyrrolidine-2,3-dione —— C28H35NO6
    (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(3-methoxypropyl)-5-(3-pentoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-ethoxy-4-phenylmethoxyphenyl)-1-[5-[(4-methylphenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione —— C38H35N3O6S2
    (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-ethoxy-4-phenylmethoxyphenyl)-1-[5-[(4-methylphenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione
    —— (4E)-1-[5-[(2,4-dichlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy-(4-propoxyphenyl)methylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C32H27Cl2N3O5S2
    (4E)-1-[5-[(2,4-dichlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy-(4-propoxyphenyl)methylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(4-phenylmethoxyphenyl)methylidene]-5-(4-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C37H38N2O5
    (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(4-phenylmethoxyphenyl)methylidene]-5-(4-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-5-(3-butoxyphenyl)-1-[5-[(4-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C33H32ClN3O5S2
    (4E)-5-(3-butoxyphenyl)-1-[5-[(4-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C32H31ClN2O6S
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— prop-2-enyl 2-[(3E)-2-(3-butoxyphenyl)-3-[hydroxy-(4-propoxyphenyl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C32H34N2O7S
    prop-2-enyl 2-[(3E)-2-(3-butoxyphenyl)-3-[hydroxy-(4-propoxyphenyl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— methyl 2-[(4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-2,3-dioxo-5-(3-phenylmethoxyphenyl)pyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C32H28N2O7S
    methyl 2-[(4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-2,3-dioxo-5-(3-phenylmethoxyphenyl)pyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(2-methyl-4-propan-2-yloxyphenyl)methylidene]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione —— C33H46N2O6
    (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(2-methyl-4-propan-2-yloxyphenyl)methylidene]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione
    —— (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C30H26N2O5S
    (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(2-methyl-4-propoxyphenyl)methylidene]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione —— C33H46N2O6
    (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(2-methyl-4-propoxyphenyl)methylidene]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione
    —— (4E)-1-(6-ethoxy-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C32H30N2O6S
    (4E)-1-(6-ethoxy-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— methyl 4-[(3E)-3-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(6-fluoro-1,3-benzothiazol-2-yl)-4,5-dioxopyrrolidin-2-yl]benzoate —— C28H21FN2O6S
    methyl 4-[(3E)-3-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(6-fluoro-1,3-benzothiazol-2-yl)-4,5-dioxopyrrolidin-2-yl]benzoate
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(4-hydroxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O5S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(4-hydroxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-[3-(diethylamino)propyl]-4-[hydroxy-(4-propoxyphenyl)methylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C30H38N2O5
    (4E)-1-[3-(diethylamino)propyl]-4-[hydroxy-(4-propoxyphenyl)methylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-(6-fluoro-1,3-benzothiazol-2-yl)-5-(3-hydroxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C27H21FN2O5S
    (4E)-1-(6-fluoro-1,3-benzothiazol-2-yl)-5-(3-hydroxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-methoxyphenyl)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(2-methyl-4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C32H44N2O6
    (4E)-5-(4-butoxy-3-methoxyphenyl)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(2-methyl-4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C31H26ClN3O5S2
    (4E)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-methoxyphenyl)-4-[(4-butoxy-3-methylphenyl)-hydroxymethylidene]-1-[2-(diethylamino)ethyl]pyrrolidine-2,3-dione —— C33H46N2O6
    (4E)-5-(4-butoxy-3-methoxyphenyl)-4-[(4-butoxy-3-methylphenyl)-hydroxymethylidene]-1-[2-(diethylamino)ethyl]pyrrolidine-2,3-dione
    —— (4E)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C31H28N2O5S
    (4E)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-methoxyphenyl)pyrrolidine-2,3-dione —— C25H16Cl2N2O4S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[(4-chlorophenyl)-hydroxymethylidene]-5-(3-methoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-[5-[(2,4-dichlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C31H25Cl2N3O5S2
    (4E)-1-[5-[(2,4-dichlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(2-methoxyethyl)-5-(3-propoxyphenyl)pyrrolidine-2,3-dione —— C25H29NO6
    (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(2-methoxyethyl)-5-(3-propoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(3-methoxypropyl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C30H31NO6
    (4E)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-(3-methoxypropyl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-5-(3,4-dichlorophenyl)-1-(6-fluoro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C25H15Cl2FN2O4S
    (4E)-5-(3,4-dichlorophenyl)-1-(6-fluoro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-5-phenylpyrrolidine-2,3-dione —— C25H17ClN2O4S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-5-phenylpyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-5-(3-chlorophenyl)-4-[(4-chlorophenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C24H13Cl3N2O3S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-5-(3-chlorophenyl)-4-[(4-chlorophenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— ethyl 2-[(3E)-3-[(4-ethoxyphenyl)-hydroxymethylidene]-2-(3-ethoxy-4-propoxyphenyl)-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C31H34N2O8S
    ethyl 2-[(3E)-3-[(4-ethoxyphenyl)-hydroxymethylidene]-2-(3-ethoxy-4-propoxyphenyl)-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-5-(3-butoxyphenyl)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C32H32N2O5S
    (4E)-5-(3-butoxyphenyl)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxyphenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C31H29ClN2O5S
    (4E)-5-(4-butoxyphenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(2-methyl-4-propan-2-yloxyphenyl)methylidene]-5-(3-methoxy-4-pentoxyphenyl)pyrrolidine-2,3-dione —— C33H46N2O6
    (4E)-1-[2-(diethylamino)ethyl]-4-[hydroxy-(2-methyl-4-propan-2-yloxyphenyl)methylidene]-5-(3-methoxy-4-pentoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-4-[(4-butoxyphenyl)-hydroxymethylidene]-1-[2-(diethylamino)ethyl]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione —— C33H46N2O6
    (4E)-4-[(4-butoxyphenyl)-hydroxymethylidene]-1-[2-(diethylamino)ethyl]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-5-(4-chlorophenyl)-4-[hydroxy(phenyl)methylidene]pyrrolidine-2,3-dione —— C24H14Cl2N2O3S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-5-(4-chlorophenyl)-4-[hydroxy(phenyl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-[5-[(4-methylphenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione —— C36H39N3O6S2
    (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[(4-ethoxyphenyl)-hydroxymethylidene]-1-[5-[(4-methylphenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione
    —— (4E)-1-(6-ethoxy-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C31H28N2O6S
    (4E)-1-(6-ethoxy-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methylphenyl)methylidene]-5-(4-methoxyphenyl)pyrrolidine-2,3-dione —— C26H19ClN2O4S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(4-methylphenyl)methylidene]-5-(4-methoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy(phenyl)methylidene]-5-(3-methoxy-4-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C32H23ClN2O5S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy(phenyl)methylidene]-5-(3-methoxy-4-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-methoxyphenyl)-1-[2-(diethylamino)ethyl]-4-[hydroxy-[2-methyl-4-(2-methylpropoxy)phenyl]methylidene]pyrrolidine-2,3-dione —— C33H46N2O6
    (4E)-5-(4-butoxy-3-methoxyphenyl)-1-[2-(diethylamino)ethyl]-4-[hydroxy-[2-methyl-4-(2-methylpropoxy)phenyl]methylidene]pyrrolidine-2,3-dione