The molecule is a linear amino trisaccharide consisting of two alpha-(1->3)-linked N-acetyl-galactosamine units, which are in turn linked beta-(1->3) to an alpha-galactose unit at the reducing end. It is an amino trisaccharide and a galactosamine oligosaccharide.
N-[(2S,3R,4R,5R,6R)-2-[(2R,3R,4R,5R,6S)-5-acetamido-3-hydroxy-2-(hydroxymethyl)-6-[(2S,3R,4S,5S,6R)-2,3,5-trihydroxy-6-(hydroxymethyl)oxan-4-yl]oxyoxan-4-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide