SMILES: C[C@@]1([C@H]2C[C@H]3[C@@H](C(=O)C(=C([C@]3(C(=O)C2(C(=O)C4=C(C=CC(=C41)Cl)O)O)O)[O-])C(=O)N)[NH+](C)C)O
Description: The molecule is a zwitterion obtained by transfer of a proton from the 2-hydroxy group to the 1-amino group of 11a-hydroxychlortetracycline; major species at pH 7.3. It is a zwitterion, a member of tetracyclines and an an 11a-hydroxytetracyline zwitterion.