The molecule is an amino disaccharide consisting of N-acetylgalactosamine having an alpha-D-galactosyl residue at the 3-position It is an amino disaccharide and a D-Galp-(1->3)-D-GalpNAc.
N-[(3R,4R,5R,6R)-2,5-dihydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]acetamide