The molecule is a linear amino trisaccharide comprising an N,9-O-diacetyl-alpha-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 is an amino trisaccharide and a glucosamine oligosaccharide.
(2R,4S,5R,6R)-5-acetamido-2-[[(2R,3R,4S,5R,6S)-6-[(2R,3S,4R,5R,6R)-5-acetamido-4,6-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-3,4,5-trihydroxyoxan-2-yl]methoxy]-6-[(1R,2R)-3-acetyloxy-1,2-dihydroxypropyl]-4-hydroxyoxane-2-carboxylic acid