1,8-Naphthyridine-3-carboxylic acid, 1,4-dihydro-1-(1,1-dimethylethyl)-6-fluoro-7-(3-(methylamino)-1-pyrrolidinyl)-4-oxo-, monohydrochloride, (S)- 1,8-Naphthyridine-3-carboxylic acid, 1-(1,1-dimethylethyl)-6-fluoro-1,4-dihydro-7-(3-(methylamino)-1-pyrrolidinyl)-4-oxo-, monohydrochloride, (S)- 144124-94-7