13,15-(15'-hydroxy)-ethano-3,8,17-triethyl-2,7,12,18-tetramethylporphyrin

4-(2-acetoxyethyl)-5-((4-(2-acetoxyethyl)-5-carboxy-3-methyl-1H-pyrrol-2-yl)(phenyl)methyl)-3-methyl-1H-pyrrole-2-carboxylic acid

3-ethoxycarbonylmethyl-4-methyl-5-benzoylpyrrole-2-carboxylic acid

benzyl 3-(ethoxycarbonylmethyl)-4-methyl-5-(1-hydroxybenzyl)pyrrole-2-carboxylate

benzyl 3-ethoxycarbonylmethyl-4-methyl-5-benzoylpyrrole-2-carboxylate