The molecule is a linear amino heptasaccharide comprising alpha-neuraminyl, beta-D-galactosyl, N-acetyl-beta-D-glucosaminyl, beta-D-galactosyl, N-acetyl-beta-D-glucosaminyl, beta-D-galactosyl and N-acetyl-beta-D-glucosamine residues connected via (2->3), (1->4), (1->3), (1->4), (1->3) and (1->4) linkages. It has a role as an epitope. It is an amino heptasaccharide 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,6S)-5-acetamido-6-[(2S,3R,4S,5S,6R)-2-[(2R,3S,4R,5R,6R)-5-acetamido-4,6-dihydroxy-2-(hydroxymethyl)oxan-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-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