Ethyl (S)-10-fluoro-3-methyl-9-(4-methylpiperazin-1-yl)-8-nitro-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate 1g

Ethyl (S)-10-fluoro-3-methyl-9-(4-methylpiperazin-1-yl)-8-nitro-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylate 1g