8-Chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(3-amino-1-pyrrolidinyl)quinoline-3-carboxylic acid C??? ??, ??, ??

8-Chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(3-amino-1-pyrrolidinyl)quinoline-3-carboxylic acid ?? ?? ? ???

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8-Chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(3-amino-1-pyrrolidinyl)quinoline-3-carboxylic acid ?? ??