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