(+-)-7-(3-Methylpiperazinyl)-1-(4-fluorophenyl)-6-fluoro-4-quinolone-3-carboxylic acid 3-Quinolinecarboxylic acid, 1,4-dihydro-1-(4-fluorophenyl)-6-fluoro-4-oxo-7-(3-methyl-1-piperazinyl)-, (+-)- VB2009000