The molecule is a branched trisaccharide in which the hydroxy groups at positions 3 and 4 have been converted into the corresponding alpha-D-glucopyranosyl and beta-D-glucopyranosyl derivatives, respectively. It derives from a beta-D-Glcp-(1->4)-alpha-D-Galp and an alpha-D-Glcp-(1->3)-alpha-D-Galp.
(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R,6S)-5,6-dihydroxy-2-(hydroxymethyl)-4-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol