The molecule is a amino tetrasaccharide comprising D-GalNAc having a beta-D-GlcNAc residue at the 6-position and a alpha-Neu5Ac-(2->3)-beta-D-Gal residue at the 3-position. It is an amino tetrasaccharide and a glucosamine oligosaccharide.
(2S,4S,5R,6R)-5-acetamido-2-[(2R,3R,4S,5S,6R)-2-[(2R,3R,4R,5R)-5-acetamido-2-[[(2R,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-3,6-dihydroxyoxan-4-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid