The molecule is a linear amino trisaccharide consisting of alpha-KDN, beta-D-galactose and N-acetyl-beta-D-glucosamine residues linked sequentially (2->3) and (1->3). It has a role as an epitope. It is an amino trisaccharide and a glucosamine oligosaccharide.
(2S,4S,5R,6R)-2-[(2R,3R,4S,5S,6R)-2-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4,5-dihydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid