4-ethoxycarbonylpiperazine
(-)-7-chloro-6-fluoro-1-<(1'R,2'S)-2'-phenylcyclopropyl>-1,4-dihydro-4-oxoquinoline-3-carboxylic acid
(-)-ethyl 2-(2,4-dichloro-5-fluorobenzoyl)-3-<<(1'R,2'S)-2'-phenylcyclopropyl>amino>acrylate
(-)-7-chloro-6-fluoro-1-<(1'R,2'S)-2'-phenylcyclopropyl>-1,4-dihydro-3-ethoxycarbonyl-4-oxoquinoline
3-(2,4-dichloro-5-fluorophenyl)-3-oxo-2-ethoxymethylenepropanoic acid ethyl ester