(4E,15E)-bilirubin-IXalpha  C12-beta-D-glucuronoside(2-)
(4e,15e)-bilirubin-ixalpha  c12-beta-d-glucuronoside(2-)
A dicarboxylic acid dianion resulting from the deprotonation of the carboxy groups of (4<i>E</i>,15<i>E</i>)-bilirubin-IXα  C12-β-<small>D</small>-glucosyluronic acid; major species at pH 7.3.