The molecule is a linear amino tetrasaccharide composed of alpha-L-rhamnose, alpha-D-galactose, N-acetyl beta-D-glucosamine and alpha-L-rhamnose units joined by sequential (1->3)-, (1->3)- and (1->4)-linkages.
N-[(2S,3R,4R,5S,6R)-4-[(2S,3R,4S,5S,6R)-3,5-dihydroxy-6-(hydroxymethyl)-4-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-2-yl]oxy-5-hydroxy-6-(hydroxymethyl)-2-[(2S,3R,4S,5R,6R)-4,5,6-trihydroxy-2-methyloxan-3-yl]oxyoxan-3-yl]acetamide