3-thiophenecarboxylic acid, 4,5-dihydro-4-oxo-2-(phenylamino)-5-[(3,4,5-trimethoxyphenyl)methylene]-, ethyl ester, (5Z)-;Ethyl (5Z)-2-anilino-4-oxo-5-(3,4,5-trimethoxybenzylidene)-4,5-dihydrothiophene-3-carboxylate
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