1H-Cyclohepta(2,1-b:4,5-b')dipyrrole-6-propanoic acid, 7-((3-(2-carboxyethyl)-5-((4-ethenyl-1,5-dihydro-3-methyl-5-oxo-2H-pyrrol-2-ylidene)methyl)-4-methyl-1H-pyrrol-2-yl)methyl)-2,3,5,5a-tetrahydro-3,5a-dimethyl-2-oxo- 83664-21-5 Lumirubin Lumirubin IX Lumirubin xiii