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