The molecule is a linear amino trisaccharide comprised of two beta(1->4)-linked galactose residues linked beta(1->3) to N-acetyl-alpha-D-galactosamine. It is an amino trisaccharide and a galactosamine oligosaccharide.
N-[(2S,3R,4R,5R,6R)-4-[(2R,3R,4R,5R,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-2,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide