SMILES: CC1=C2C=CC=C(C2=C(C3=C1C[C@H]4[C@@H](C(=O)C(=C([C@]4(C3=O)O)O)C(=O)N)N)O)O
Description: The molecule is a member of the class of tetracyclines that is anhydrotetracycline in which the two methyl groups attached to the nitrogen have both been replaced by hydrogen. It is a tertiary alpha-hydroxy ketone and a member of tetracyclines. It is a tautomer of a 4-amino-4-de(dimethylamino)anhydrotetracycline zwitterion.