SMILES: CC(=O)N[C@@H]1[C@H](C[C@@](O[C@H]1[C@@H]([C@@H](CO)O[C@@]2(C[C@@H]([C@H]([C@@H](O2)[C@@H]([C@@H](CO)O)O)NC(=O)CO)O)C(=O)O)O)(C(=O)O)O[C@H]3[C@H]([C@H](O[C@H]([C@@H]3O)O[C@@H]4[C@H](OC([C@@H]([C@H]4O)NC(=O)C)O)CO)CO)O)O
Description: The molecule is a linear amino tetrasaccharide comprising an alpha-N-glycoloylneuraminyl residue, an alpha-N-acetylneuraminyl residue, a beta-D-galactose residue and (at the reducing end) an N-acetyl-D-glucosamine residue, linked sequentially (2->8), (2->3) and (1->4). It is a glucosamine oligosaccharide and an amino tetrasaccharide.