7-(Diisopropylamino)-6-fluoro-1-(5-(4-methyl-1-piperazinyl)-2-pyridinyl)-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid AIDS-146699 AIDS146699 NSC674550 {1-[5-(4-Methyl-1-piperazinyl)-2-pyridyl]-6-fluoro-7-(1,} 1-diisopropylamino)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid