The molecule is a tetrasaccharide consisting of three 3-deoxy-D-manno-oct-2-ulose residues and a single N-acetylglucosamine residue in a linear sequence, joined via alpha-linkages. It has a role as an epitope. It is an amino tetrasaccharide and a glucosamine oligosaccharide.
(2R,4R,5R,6R)-2-[(2R,4R,5R,6R)-2-[(2R,4R,5R,6R)-2-[[(2R,3S,4R,5R,6R)-5-acetamido-3,4,6-trihydroxyoxan-2-yl]methoxy]-2-carboxy-6-[(1R)-1,2-dihydroxyethyl]-5-hydroxyoxan-4-yl]oxy-2-carboxy-6-[(1R)-1,2-dihydroxyethyl]-5-hydroxyoxan-4-yl]oxy-6-[(1R)-1,2-dihydroxyethyl]-4,5-dihydroxyoxane-2-carboxylic acid