benzyl 5-iodo-3-(2-acetoxyethyl)-4-methylpyrrole-2-carboxylate

5-benzyloxycarbonyl-4-(2-acetoxyethyl)-3-methylpyrrole-2-carboxylic acid

ethyl 4-diethylaminomethyl-3-(ethoxycarbonylmethyl)-5-methylpyrrole-2-carboxylate