tert-Butyl 6-chloro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,4'-piperidine]-1'-carboxylate

tert-Butyl 6-chloro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,4'-piperidine]-1'-carboxylate