tert-Butyl 2-bromo-6,7-dihydrospiro[pyrazolo[5,1-c][1,4]oxazine-4,3'-pyrrolidine]-1'-carboxylate 250mg

tert-Butyl 2-bromo-6,7-dihydrospiro[pyrazolo[5,1-c][1,4]oxazine-4,3'-pyrrolidine]-1'-carboxylate 250mg