5H-[1,3]thiazolo[3,2-a]pyrimidine-3,5(2H)-dione 5H-thiazolo[3,2-a]pyrimidine-3,5(2H)-dione InChI=1/C6H4N2O2S/c9-4-1-2-7-6-8(4)5(10)3-11-6/h1-2H,3H