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