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(2007/10/02)7-hydrazino-4-oxo-6-fluoro-1-ethyl-1,4-dihydro-3-quinolinecarboxylic acid
6,7-difluoro-1-ethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
7-{N'-[4-Chloro-1-(4-fluoro-phenyl)-but-(E)-ylidene]-hydrazino}-1-ethyl-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid