The molecule is a beta-L-Fucp-(1->4)-D-Galp in which the galactopyranose moiety has alpha- configuration at the anomeric centre. It derives from an alpha-D-galactose.
(2S,3S,4R,5S,6R)-2-methyl-6-[(2R,3R,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol