The molecule is a branched trisaccharidethat is alpha-L-fucopyranosyl-(1->2)-beta-D-glucopyranose in which the hydroxy group at position 3 of the glucopyranose moiety has been converted into the corresponding beta-D-galactopyranosyl derivative. It derives from a beta-D-Galp-(1->3)-beta-D-Glcp.
(2S,3S,4R,5S,6S)-2-[(2R,3R,4S,5R,6R)-2,5-dihydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]oxy-6-methyloxane-3,4,5-triol