The molecule is a branched amino trisaccharide that consists of N-acetyl-alpha-D-galactosamine having a beta-D-galactosyl residue attached at the 3-position and an alpha-N-acetylneuraminosyl residue attached at the 6-position. It has a role as an epitope. It is an amino trisaccharide and a galactosamine oligosaccharide.
(2R,4S,5R,6R)-5-acetamido-2-[[(2R,3R,4R,5R,6S)-5-acetamido-3,6-dihydroxy-4-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methoxy]-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid