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

1-Cyclopropyl-6,8-difluoro-7-(4-hydroxypiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid--hydrogen chloride (1/1)