The molecule is a linear amino tetrasaccharide consisting of a sequence of beta-D-galactose, N-acetyl-beta-D-glucosamine, beta-D-galactose and N-acetyl-beta-D-glucosamine residues linked (1->4), (1->3) and (1->3). It has a role as an epitope. It is an amino tetrasaccharide and a glucosamine oligosaccharide.
N-[(2S,3R,4R,5S,6R)-2-[(2R,3R,4S,5S,6R)-2-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]acetamide