The molecule is a branched amino pentasaccharide consisting of D-galactose at the reducing end with an alpha-L-fucosyl-(1->2)-[N-acetyl-beta-D-galactosaminyl-(1->3)]-beta-D-galactosyl-(1->3)-N-acetyl-beta-D-glucosaminyl moiety attached at the 3-position. It is an amino pentasaccharide, a galactosamine oligosaccharide and a glucosamine oligosaccharide.
N-[(2S,3R,4R,5R,6R)-2-[(2R,3R,4S,5S,6R)-2-[(2R,3S,4R,5R,6S)-5-acetamido-3-hydroxy-2-(hydroxymethyl)-6-[(3R,4S,5S,6R)-2,3,5-trihydroxy-6-(hydroxymethyl)oxan-4-yl]oxyoxan-4-yl]oxy-5-hydroxy-6-(hydroxymethyl)-3-[(2S,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-4-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide