4-Pyridinecarboxylic acid, hydrazide, compd. with (3S)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-1,4-oxazino[2,3,4-ij]quinoline-6-carboxylic acid (1:1) AIDS-043857 AIDS043857 Levofloxacin & Isoniazid