3-[2-[(E)-[3-(2-carboxyethyl)-5-[[(2S,3R,4R)-3-ethyl-4-methyl-5-oxo-pyrrolidin-2-yl]methyl]-4-methyl-pyrrol-2-ylidene]methyl]-5-[[(2S,3R,4R)-4-ethyl-3-methyl-5-oxo-pyrrolidin-2-yl]methyl]-4-methyl-1H-pyrrol-3-yl]propanoic acid

3-[2-[(E)-[3-(2-carboxyethyl)-5-[[(2S,3R,4R)-3-ethyl-4-methyl-5-oxo-pyrrolidin-2-yl]methyl]-4-methyl-pyrrol-2-ylidene]methyl]-5-[[(2S,3R,4R)-4-ethyl-3-methyl-5-oxo-pyrrolidin-2-yl]methyl]-4-methyl-1H-pyrrol-3-yl]propanoic acid

(−)-stercobilin

21H-Biline-8,12-dipropanoic acid, 3,18-diethyl-1,2,3,4,5,15,16,17,18,19,22,24-dodecahydro-2,7,13,17-tetramethyl-1,19-dioxo-, (2R,3R,4S,16S,17R,18R)-

Biline-8,12-dipropionic acid, 3,18-diethyl-1,2,3,4,5,15,16,17,18,19,22,24-dodecahydro-2,7,13,17-tetramethyl-1,19-dioxo-, (−)-

stercobilin

[Wiki]

stercobilin IX

Stercobiline