SMILES: C[NH+](C)[C@H]1[C@@H]2C[C@@H]3CC4=C(C=CC(=C4C(=C3C(=O)[C@@]2(C(=C(C1=O)C(=O)N)[O-])O)[O-])O)N(C)C
Description: The molecule is an organic anion that is the conjugate base of minocycline, obtained by deprotonation of the two enolic hydroxy groups and protonation of the non-aromatic tertiary amino group. It is a conjugate base of a minocycline and a minocycline zwitterion.