SMILES: CC(=O)N[C@@H]1[C@H](C[C@@](O[C@H]1[C@@H]([C@@H](CO)O)O)(C(=O)O)O[C@@H]2[C@H]([C@@H](O[C@@H]([C@@H]2O[C@H]3[C@@H]([C@H]([C@H]([C@H](O3)CO)O)O)NC(=O)C)CO)O[C@@H]4[C@H](O[C@H]([C@@H]([C@H]4O)NC(=O)C)O)CO)O)O
Description: The molecule is a branched amino tetrasaccharide comprised of a trisaccharide chain of N-acetyl-alpha-neuraminic acid, beta-D-galactose and N-acetyl-beta-D-glucosamine residues linked sequentially (2->3) and (1->4), to the galactose residue of which is also linked (1->4) an N-acetyl-beta-L-galactosamine residue. It has a role as an epitope. It is an amino tetrasaccharide, a glucosamine oligosaccharide and a galactosamine oligosaccharide.