The molecule is a branched amino pentasaccharide consisting of four alpha-L-rhamnose residues (one at the reducing end) and a single beta-D-N-acetylglucosamine residue.
N-[(2S,3R,4R,5S,6R)-2-[(2R,3R,4R,5S,6S)-3-[(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-2,5-dihydroxy-6-methyloxan-4-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide