SMILES: CC(=O)N[C@@H]1[C@H]([C@H]([C@H](OC1O)CO)O[C@H]2[C@@H]([C@H]([C@H]([C@H](O2)CO)O[C@@H]3[C@@H]([C@H]([C@H]([C@H](O3)CO)O)O)O)O)O)O
Description: The molecule is an amino trisaccharide consisting of two D-galactose residues and an N-acetyl-D-galactosamine residue (at the reducing end) in a linear sequence. It is an amino trisaccharide and a galactosamine oligosaccharide.