Synonyms: (3S)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-nitroso-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid (ACI), N-Desmethyl-N-nitrosolevofloxacine,7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 9-fluoro-2,3-dihydro-3-methyl-10-(4-nitroso-1-piperazinyl)-7-oxo-, (3S)- (ACI)