The molecule is a linear amino trisaccharide comprising an N-glycoloyl-beta-neuraminyl residue (2->6)-linked to a beta-D-galactosyl residue, which is in turn linked (1->4) to N-acetyl-beta-D-glucosamine. It has a role as an epitope. It is a glucosamine oligosaccharide and an amino trisaccharide.
(2S,4S,5R,6R)-2-[[(2R,3R,4S,5R,6S)-6-[(2R,3S,4R,5R)-5-acetamido-4,6-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,4,5-trihydroxyoxan-2-yl]methoxy]-4-hydroxy-5-[(2-hydroxyacetyl)amino]-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid