The molecule is a branched amino octasaccharide comprising a linear hexasaccharide of beta-D-galactose, N-acetyl-beta-D-glucosamine, N-acetyl-beta-D-galactosamine, alpha-D-galactose, beta-D-galactose and D-glucose residues linked sequentially (1->4), (1->6), (1->3), (1->4) and (1->4), to the GlcNac and GalNAc residues of which are also (1->3) linked alpha-L-galactose and beta-D-galactose residues respectively. It has a role as an epitope. It is an amino octasaccharide, a galactosamine oligosaccharide and a glucosamine oligosaccharide.
N-[(2S,3R,4R,5R,6R)-6-[[(2R,3R,4R,5S,6R)-3-acetamido-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4-[(2S,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxymethyl]-2-[(2R,3R,4S,5S,6R)-2-[(2R,3R,4R,5R,6S)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2R,3S,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-5-hydroxy-4-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]acetamide