9-fluoro-3-fluoromethyl-10(N-(4'-methyl)piperazinyl)-7-oxo-2,3-dihydro-7H-pyrido(1,2,3de)(1,4)benzothiazine-6-carboxylic acid
9-fluoro-3-fluoromethyl-10(n-(4'-methyl)piperazinyl)-7-oxo-2,3-dihydro-7h-pyrido(1,2,3de)(1,4)benzothiazine-6-carboxylic acid