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