3-Quinolinecarboxylic acid, 8-cyano-1-cyclopropyl-6-fluoro-7-((4aS,7aS)-hexahydropyrrolo(3,4-b)-1,4-oxazin-6(2H)-yl)-1,4-dihydro-4-oxo-
8-Cyano-1-cyclopropyl-6-fluoro-7-[(4aS,7aS)-hexahydropyrrolo[3,4-b]-1,4-oxazin-6(2H)-yl]-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid