(4E,15E)-bilirubin IXalpha C8-beta-D-glucuronoside(out) <=> (4E,15E)-bilirubin IXalpha C8-beta-D-glucuronoside(in)
(4e,15e)-bilirubin ixalpha c8-beta-d-glucuronoside(out) <=> (4e,15e)-bilirubin ixalpha c8-beta-d-glucuronoside(in)