SMILES: CC(=O)N[C@@H]1[C@H](C[C@@](O[C@H]1[C@@H]([C@@H](CO[C@@]2(C[C@@H]([C@H]([C@@H](O2)[C@@H]([C@@H](CO)O)O)NC(=O)C)O)C(=O)O)O)O)(C(=O)O)O)O
Description: The molecule is an amino disaccharide consisting of two alpha(2->9)-linked sialic acid units; corresponds to the repeating unit in the group C polysaccharide of Neisseria meningitidis (MenC).