methyl 3-[[2-(methyl-phenylamino)acetyl]amino]thiophene-2-carboxylate methyl 3-[[2-(methyl-phenyl-amino)acetyl]amino]thiophene-2-carboxylate 3-[[2-(methyl-phenylamino)-1-oxoethyl]amino]-2-thiophenecarboxylic acid methyl ester 3-[[2-(methyl-phenyl-amino)acetyl]amino]thiophene-2-carboxylic acid methyl ester methyl 3-[2-(methyl-phenyl-amino)ethanoylamino]thiophene-2-carboxylate