The molecule is a branched amino trisaccharide comprised of two N-acetyl-beta-D-glucosamine residues linked (1->4) and (1->6) to N-acetyl-alpha-D-galactosamine. It has a role as an epitope. It is an amino trisaccharide, a glucosamine oligosaccharide and a galactosamine oligosaccharide.
N-[(2S,3R,4R,5R,6R)-5-[(2R,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[[(2R,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-2,4-dihydroxyoxan-3-yl]acetamide