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