The molecule is an amino trisaccharide consisting of an alpha-Gal residue at the non-reducing end linked (1->4) to a beta-GalNAc residue which is in turn linked (1->4) to alpha-Gal. It is an amino trisaccharide and a galactosamine oligosaccharide.
N-[(2S,3R,4R,5R,6R)-4-hydroxy-6-(hydroxymethyl)-2-[(2R,3R,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-5-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]acetamide