phycoerythrobilin

3-[2-[(E)-[(5E)-3-(2-carboxyethyl)-5-[[(3Z)-3-ethylidene-4-methyl-5-oxo-pyrrol-2-yl]methylene]-4-methyl-pyrrol-2-ylidene]methyl]-4-methyl-5-[(3-methyl-5-oxo-4-vinyl-1,2-dihydropyrrol-2-yl)methyl]-1H-pyrrol-3-yl]propanoic acid

phycoerythrobilin

[Wiki]

21H-Biline-8,12-dipropanoic acid, 18-ethenyl-3-ethylidene-1,2,3,15,16,19,22,24-octahydro-2,7,13,17-tetramethyl-1,19-dioxo-, (2R,3E,16R)-

21H-Biline-8,12-dipropanoicacid,18-ethenyl-3-ethylidene-1,2,3,15,16,19,22,24-octahydro-2,7,13,17-tetramethyl-1,19-dioxo-,(2R,3E,16R)-