methyl 1-(4-nitrobenzyl)-5-oxo-2-pyrrolidinecarboxylate
methyl 1-[(4-nitrophenyl)methyl]-5-oxopyrrolidine-2-carboxylate 5-keto-1-(4-nitrobenzyl)pyrrolidine-2-carboxylic acid methyl ester 1-[(4-nitrophenyl)-methyl]-5-oxo-pyrrolidine-2-carboxylic acid methyl ester
methyl 1-[(4-nitrophenyl)methyl]-5-oxopyrrolidin-2-carboxylat méthyle1-[(4-nitrophényl)méthyl]-5-oxopyrrolidine-2-carboxylate メチル=1-[(4-ニトロフェニル)メチル]-5-オキソピロリジン-2-カル&
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