3-[(5Z,10Z,14Z,19E)-7-(2-Acetoxy-ethyl)-12-(2-chloro-ethyl)-20-methanesulfonyloxy-18-(2-methoxycarbonyl-ethyl)-3,8,13,17-tetramethyl-porphyrin-2-yl]-propionic acid methyl ester

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

5-ethoxycarbonyl-4-(ethoxycarbonylmethyl)-3-methylpyrrole-2-carboxylic acid

dibenzyl 4,4'-bis(2-acetoxyethyl)-3,3'-dimethylpyrromethane-5,5'-dicarboxylate