SMILES: CC(C(=O)O)O[C@@H]1[C@H]([C@@H](O[C@@H]([C@H]1O)CO)O[C@@H]2[C@H](O[C@H]([C@@H]([C@H]2O)NC(=O)C)O)CO)NC(=O)C
Description: The molecule is an amino disaccharide consisting of N-acetyl-beta-D-glucosamine, substituted on O-3 with a 1-carboxyethyl group and linked (1->4) to a second N-acetyl-beta-D-glucosamine residue. It is a glucosamine oligosaccharide and an amino disaccharide.