1-Cyclopropyl--7-(2,8-diazabicyclo(4.3.0)non-8-yl)-6-fluoro-8-methoxy-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid
1-Cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-((4as,7as)-octahydro-6H-pyrrolo(3,4-b)pyridin-6-yl)-4-oxo-3-quinolinecarboxylic acid