The molecule is a galactosamine oligosaccharide consisting of three (1->6)-linked N-acetyl-beta-D-galactosamine units with two beta-D-glucuronosyl residues attached at the 3- and 3'-positions. It is an amino pentasaccharide 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-6-[[(2R,3R,4R,5R,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-4-[(2R,3R,4S,5S,6S)-6-carboxy-3,4,5-trihydroxyoxan-2-yl]oxy-5-hydroxyoxan-2-yl]oxymethyl]-3,6-dihydroxyoxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid