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