The molecule is a amino trisaccharide consisting of N-acetyl-D-glucosamine having an N-acetyl-alpha-D-galactosaminyl-(1->3)-beta-D-galactosyl group attached at the 3-position. It is an amino trisaccharide, a galactosamine oligosaccharide and a glucosamine oligosaccharide.
N-[(2R,3R,4R,5R,6R)-2-[(2R,3R,4S,5S,6R)-2-[(3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide