The molecule is a member of the class of tetracyclines that is anhydrotetracycline in which one of the methyl groups attached to the nitrogen has been replaced by hydrogen. It is a member of tetracyclines and a tertiary alpha-hydroxy ketone. It is a tautomer of a desmethylanhydrotetracycline zwitterion.
(4S,4aS,12aR)-1,10,11,12a-tetrahydroxy-6-methyl-4-(methylamino)-3,12-dioxo-4a,5-dihydro-4H-tetracene-2-carboxamide