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