The molecule is a glycosylglucose consisting of alpha-D-galactopyranose and D-glucopyranose residues joined in sequence by a (1->3) glycosidic bond. It derives from a D-glucopyranose and an alpha-D-galactose.
(3R,4S,5R,6R)-6-(hydroxymethyl)-4-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxane-2,3,5-triol