1-(2,4-difluorophenyl)-6-fluoro-7-(3,3-dimethylpiperazin-1-yl)-1,4-dihydro-4-oxo<1,8>naphthyridine-3-carboxylic acid hydrochloride
1-(2,4-difluorophenyl)-6-fluoro-7-(3,3-dimethylpiperazin-1-yl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid hydrochloride
2,2-dimethylpiperazine dihydrochloride