The molecule is an amino trisaccharide consisting of N-acetyl-beta-D-galactopyranosamine, beta-D-galactopyranose and beta-D-glucopyranose residues joined in sequence by (1->4) glycosidic bonds. It is a galactosamine oligosaccharide and an amino trisaccharide.
N-[(2S,3R,4R,5R,6R)-2-[(2R,3R,4R,5R,6S)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]acetamide