tert-Butyl 4-oxo-2-thioxo-1,2,3,4,5,6,8,9-octahydro-7H-pyrimido[4,5-d]azepine-7-carboxylate 1g

tert-Butyl 4-oxo-2-thioxo-1,2,3,4,5,6,8,9-octahydro-7H-pyrimido[4,5-d]azepine-7-carboxylate 1g