1H-1,2,3-Triazolo(4,5-d)pyrimidine-5,7-(4H,6H)-dione, 4-(acetyloxy)- 3-Acetoxy-8-azaxanthine 34618-17-2 4-(Acetyloxy)-1H-1,2,3-triazolo(4,5-d)pyrimidine-5,7-(4H,6H)-dione