粪卟啉I四甲酯

3,8,13,17-四甲基-5,10,15,20,22,24-六氢卟啉-2,7,12,18-四丙酸

methyl 3-(2-formyl-5-iodo-4-methyl-1H-pyrrol-3-yl)propanoate

methyl 3-(2,4-dimethyl-1H-pyrrol-3-yl)propanoate