The molecule is a trisaccharide that is beta-D-galactopyranose in which the hydroxy groups at positions 2 and 4 have been converted to the corresponding beta-D-galactopyranoside and beta-D-glucopyranoside, respectively. It is a trisaccharide, a beta-D-glucoside and a beta-D-galactoside. It derives from a beta-D-Galp-(1->2)-beta-D-Galp.
(2S,3R,4S,5S,6R)-2-[(2R,3R,4S,5R,6R)-4,6-dihydroxy-2-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol