The molecule is a branched amino trisaccharide consisting of N-acetyl-beta-D-galactosamine having beta-D-glucuronosyl and N-acetyl-beta-D-galactosaminyl residues attached at the 3- and 6-positions respectively. It is an amino trisaccharide and a galactosamine oligosaccharide.
(2S,3S,4S,5R,6R)-6-[(2R,3R,4R,5R,6R)-5-acetamido-2-[[(2R,3R,4R,5R,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-3,6-dihydroxyoxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid