(4R,12AS)-N-((2,4-DIFLUOROPHENYL)METHYL)-3,4,6,8,12,12A-HEXAHYDRO-7-METHOXY-4-METHYL-6,8-DIOXO-2H-PYRIDO(1',2':4,5)PYRAZINO(2,1-B)(1,3)OXAZINE-9-CARBOXAMIDE
(4r,12as)-n-((2,4-difluorophenyl)methyl)-3,4,6,8,12,12a-hexahydro-7-methoxy-4-methyl-6,8-dioxo-2h-pyrido(1',2':4,5)pyrazino(2,1-b)(1,3)oxazine-9-carboxamide