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(2007/10/02)2-phenyl-4-(cinnamylidene)-2-oxazolin-5-one
1-Benzoyl-4-hydroxy-2-oxo-5-[(E)-3-phenyl-prop-2-en-(E)-ylidene]-2,5-dihydro-1H-pyrrole-3-carboxylic acid methyl ester
4-Hydroxy-2-oxo-5-[(E)-3-phenyl-prop-2-en-(E)-ylidene]-2,5-dihydro-1H-pyrrole-3-carboxylic acid methyl ester