1,3,7-trimethyl-2H-pyrimido[1,2-a]pyrimidine-2,6(1H)-dione 2H-pyrimido[1,2-a]pyrimidine-2,6(1H)-dione, 1,3,7-trimethyl- InChI=1/C10H11N3O2/c1-6-4-11-10-12(3)8(14)7(2)5-13(10)9(6)15/h4-5H,1-3H