3-Quinolinecarboxylic acid, 1-cyclopropyl-6,8-difluoro-1,4-dihydro-7-(4-(1-methylethyl)-1-piperazinyl)-4-oxo-

1-Cyclopropyl-6,8-difluoro-4-oxo-7-[4-(propan-2-yl)piperazin-1-yl]-1,4-dihydroquinoline-3-carboxylic acid