The molecule is a branched amino tetrasaccharide that is D-galactopyranose which has been glycosylated at positions 3 and 6 by beta-D-galactopyranosyl-(1->4)-2-acetamido-beta-D-glucopyranosyl and 2-acetamido-beta-D-glucopyranosyl groups, respectively.
N-[(2R,3R,4R,5S,6R)-2-[[(2R,3S,4S,5R)-4-[(2S,3R,4R,5S,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,5,6-trihydroxyoxan-2-yl]methoxy]-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide