6,8-difluoro-1-(2-fluoroethyl)-7-(2-methylaminoethylamino)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
6,8-difluoro-1-(2-fluoroethyl)-7-(2-methylaminoethylamino)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid