tert-Butyl 4-(2-(5-bromopyridin-3-yl)-5-oxo-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-yl)piperazine-1-carboxylate 5g

tert-Butyl 4-(2-(5-bromopyridin-3-yl)-5-oxo-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-yl)piperazine-1-carboxylate 5g