tert-butyl (4aS,8aS)-8,8-difluoro-3-oxo-4a,5,7,8a-tetrahydro-4H-pyrido[4,3-b][1,4]oxazine-6-carboxylate
tert-butyl (4aS,8aS)-8,8-difluoro-3-oxo-4a,5,7,8a-tetrahydro-4H-pyrido[4,3-b][1,4]oxazine-6-carboxylate ·
tert-butyl (4aS,8aS)-8,8-difluoro-3-oxo-4a,5,7,8a-tetrahydro-4H-pyrido[4,3-b][1,4]oxazine-6-carboxylate ·