The molecule is a branched amino tetrasaccharide consisting of methyl N-acetyl-beta-D-glucosaminide having an alpha-L-fucosyl residue at the 2-position and a beta-D-tyvelosyl-(1->3)-N-acetyl-beta-D-galactosaminyl group at the 3-position. It has a role as an epitope.
N-[(2S,3R,4R,5R,6R)-2-[(2R,3S,4R,5R,6R)-5-acetamido-2-(hydroxymethyl)-6-methoxy-4-[(2S,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-3-yl]oxy-4-[(2S,3S,5S,6R)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide