The molecule is a glycosylxylose consisting of a beta-D-galactopyranose residue and a beta-D-xylopyranose residue joined in sequence by a (1->3) glycosidic bond. It derives from a beta-D-galactose and a beta-D-xylose.
(2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3R,4S,5R)-2,3,5-trihydroxyoxan-4-yl]oxyoxane-3,4,5-triol