10-(2,6-dimethyl-4-pyridinyl)-9-fluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyrido(1,2,3-de)(1,4)-benzothiazine-6-carboxylic acid
10-(2,6-dimethyl-4-pyridinyl)-9-fluoro-3-methyl-7-oxo-2,3-dihydro-7h-pyrido(1,2,3-de)(1,4)-benzothiazine-6-carboxylic acid