3-Ethyl-5-(5-formyl-4-methyl-1H-pyrrol-2-ylmethyl)-4-methyl-1H-pyrrole-2-carboxylic acid tert-butyl ester

3-Ethyl-5-(5-formyl-3,4-dimethyl-1H-pyrrol-2-ylmethyl)-4-methyl-1H-pyrrole-2-carboxylic acid tert-butyl ester

5-(5-Carboxy-4-methyl-1H-pyrrol-2-ylmethyl)-3-ethyl-4-methyl-1H-pyrrole-2-carboxylic acid tert-butyl ester

benzyl 8,13-diethyl-2,3,7,12,14-pentamethyl-5,16-dihydrotripyrrin-1-carboxylate