The molecule is a glycosyl alditol consisting of alpha-L-fucopyranose, beta-D-galactopyranose, and D-glucitol joined in sequence by (1->2) and (1->3) glycosidic bonds. It derives from a D-glucitol and an alpha-L-Fucp-(1->2)-beta-D-Galp.
(2R,3R,4R,5S)-4-[(2S,3R,4S,5R,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2S,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxyhexane-1,2,3,5,6-pentol