The molecule is a glycosylglucopyranuronic acid that is beta-D-xylopyranose which is linked to beta-D-glucopyranuronic acid by a (1->2) glycosidic bond. It derives from a beta-D-xylose.
(2S,3S,4S,5R,6R)-3,4,6-trihydroxy-5-[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxyoxane-2-carboxylic acid