The molecule is an amino trisaccharide comprised of alpha-neuraminic acid, N-acetyl-beta-D-galactosamine and N-acetyl-beta-D-glucosamine residues linked sequentially (2->3) and (1->4). It is an amino trisaccharide, a galactosamine oligosaccharide and a glucosamine oligosaccharide.
(2S,4S,5R,6R)-5-acetamido-2-[(2S,3R,4R,5R,6R)-3-acetamido-2-[(2R,3S,4R,5R,6R)-5-acetamido-4,6-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid