3-[2-formyl-4-methyl-5-(4-methyl-5-oxo-3-vinyl-1,5-dihydro-pyrrol-2-ylidenemethyl)-pyrrol-3-yl]-propionic acid methyl ester

3-[2-[(E)-[3-(3-甲氧基-3-氧代-丙基)-4-甲基-5-[(E)-(3-甲基-5-氧代-4-乙烯基-吡咯-2-亚基)甲基]吡咯-2-亚基]甲基]-4-甲基-5-[(E)-(4-甲基-5-氧代-3-乙烯基-吡咯-2-亚基)甲基]-1H-吡咯-3-基]丙酸甲酯