1-Cyclopropyl-7-(4-{4-[5-(S)-(ethoxycarbonylamino-methyl)-2-oxo-oxazolidin-3-yl]-2-fluoro-phenyl}-piperazin-1-yl)-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid AIDS-167307 AIDS167307