SMILES: C[C@@]1(C2=C(C(=O)C3=C1C=CC=C3O)C(=O)[C@]4([C@@H](C2)[C@@H](C(=O)C(=C4O)C(=O)N)N(C)C)O)O
Description: The molecule is the 12-dehydro derivative of tetracycline. It is a tertiary alpha-hydroxy ketone and a member of tetracyclines. It is a tautomer of a 12-dehydrotetracycline zwitterion.