1,3,5-Triazino(1,2-a)benzimidazol-4(1H)-one, 2,3-dihydro-2,2-dimethyl- 2,3-Dihydro-2,2-dimethyl-1,3,5-triazino(1,2-a)benzimidazol-4(1H)-one 71109-15-4