3-thiophenecarboxylic acid, 2-amino-4-(3,4,5-trimethoxyphenyl)-, ethyl ester;Ethyl 2-amino-4-(3,4,5-trimethoxyphenyl)-3-thiophenecarboxylate;Ethyl 2-amino-4-(3,4,5-trimethoxyphenyl)thiophene-3-carboxylate
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