The molecule is a branched amino pentasaccharide comprising a linear tetrasaccharide chain of N-acetyl-alpha-D-galactosamine, beta-D-galactose, N-acetyl-beta-D-glucosamine and N-acetyl-alpha-D-galactosamine residues linked (1->3), (1->4) and (1->3) respectively, with an alpha-L-fucose residue linked (1->2) to the galactose residue. It is an amino pentasaccharide, a galactosamine oligosaccharide and a glucosamine oligosaccharide.
N-[(2R,3R,4R,5R,6R)-2-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R,6R)-5-acetamido-6-[(2S,3R,4R,5R,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)-3-[(2S,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-4-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide