The molecule is a linear amino tetrasaccharide comprising 2-O-demethyl-beta-anthrose at the non-reducing end and two alpha-L-rhamnose units joined by sequential (1->3)- and (1->2)-linkages.
N-[(2R,3S,4S,5R,6S)-6-[(2S,3S,4R,5R,6S)-3,5-dihydroxy-2-methyl-6-[(2R,3R,4R,5S,6S)-2,3,5-trihydroxy-6-methyloxan-4-yl]oxyoxan-4-yl]oxy-4,5-dihydroxy-2-methyloxan-3-yl]-3-hydroxy-3-methylbutanamide