SMILES: CC(C)(C)[NH2+]CC(=O)NC1=CC(=C2C[C@H]3C[C@H]4[C@@H](C(=O)C(=C([C@]4(C(=O)C3=C(C2=C1O)O)O)[O-])C(=O)N)[NH+](C)C)N(C)C
Description: The molecule is an ammonium ion that is the conjugate acid of tigecycline; major species at pH 7.3. It is a conjugate acid of a tigecycline.