methyl 1-allyl-2-oxocyclopentanecarboxylate
methyl 2-oxo-1-prop-2-enylcyclopentane-1-carboxylate 1-allyl-2-keto-cyclopentane-1-carboxylic acid methyl ester 1-allyl-2-oxo-cyclopentane-1-carboxylic acid methyl ester
methyl 2-oxo-1-prop-2-enylcyclopentan-1-carboxylat méthyle2-oxo-1-prop-2-enylcyclopentane-1-carboxylate メチル=2-オキソ-1-プロプ-2-エニルシクロペンタン-1-カルボキ
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