The molecule is a branched amino hexasaccharide consisting of the tetrasaccharide beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->3)-beta-D-galactosyl-(1->4)-N-acetyl-D-glucosamine having an alpha-N-acetylneuraminyl residue attached at the 3-position of the galactosyl residue at the non-reducing end and an alpha-L-fucosyl residue attached at the 3-position of the N-acetyl-D-glucosaminyl residue at the reducing end. It has a role as an epitope. It is an amino hexasaccharide and a glucosamine oligosaccharide.
(2S,4S,5R,6R)-5-acetamido-2-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R,6S)-5-acetamido-6-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R)-5-acetamido-6-hydroxy-2-(hydroxymethyl)-4-[(2S,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid