The molecule is a heptasaccharide derivative in which a backbone of one glucuronic acid, one 6-O-acetyl and three mannose residues is branched at each of the two non-terminal mannoses with a xylose residue, linked alpha(1->2).
(2S,3S,4S,5R,6R)-6-[(2R,3S,4S,5S,6R)-6-(acetyloxymethyl)-4,5-dihydroxy-2-[(2R,3S,4S,5R,6R)-5-hydroxy-2-[(2R,3R,4S,5S,6R)-3-hydroxy-2-(hydroxymethyl)-6-[(2S,3S,4S,5R,6R)-2,3,5-trihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-5-[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxyoxan-4-yl]oxy-6-(hydroxymethyl)-3-[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxyoxan-4-yl]oxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid