5H-Thiazolo(3,2-a)quinoline-4-carboxylic acid, 7-fluoro-5-oxo-8-(4-(2-propenyl)-1-piperazinyl)- 8-(4-Allyl-1-piperazinyl)-7-fluoro-5-oxo-5H-thiazolo(3,2-a)quinoline-4-carboxylic acid 84339-01-5