The molecule is a pentasaccharide consisting of four rhamnose residues (one at the reducing end) and one N-acetylglucosamine residue in a linear sequence, joined via alpha-linkages. It has a role as an epitope.
N-[(2S,3R,4R,5S,6R)-4-[(2S,3R,4R,5S,6S)-4-[(2S,3R,4R,5R,6S)-4,5-dihydroxy-6-methyl-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxy-3,5-dihydroxy-6-methyloxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)-2-[(2R,3R,4R,5R,6S)-2,4,5-trihydroxy-6-methyloxan-3-yl]oxyoxan-3-yl]acetamide