1-Cyclopropyl-7-[4-(4-{5-(S)-[(3-ethyl-ureido)-methyl]-2-oxo-oxazolidin-3-yl}-2-fluoro-phenyl)-piperazin-1-yl]-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid AIDS-167306 AIDS167306