6-Fluoro-7-(4-methyl-1-piperazinyl)-1-(5-(4-methyl-1-piperazinyl)-2-pyridinyl)-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid AIDS-146697 AIDS146697 NSC674548 {1-[5-(4-Methyl-1-piperazinyl)-2-pyridyl]-6-fluoro-7-(4-} methyl-1-piperazinyl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid