The molecule is a linear amino tetrasaccharide comprising the unique bacterial sugar anthrose at the non-reducing end and three L-rhamnopyranose units joined by sequential (1->3)-, (1->3)- and (1->2)-linkages.
N-[(2R,3S,4S,5R,6R)-6-[(2R,3R,4R,5S,6S)-2-[(2S,3S,4R,5R,6R)-3,5-dihydroxy-2-methyl-6-[(3R,4R,5R,6S)-2,4,5-trihydroxy-6-methyloxan-3-yl]oxyoxan-4-yl]oxy-3,5-dihydroxy-6-methyloxan-4-yl]oxy-4-hydroxy-5-methoxy-2-methyloxan-3-yl]-3-hydroxy-3-methylbutanamide