1,3,5-Triazino(1,2-a)benzimidazol-4(1H)-imine, 2,3-dihydro-2,3,3-trimethyl- 104576-58-1 2,3,3-Trimethyl-2,3-dihydro-1,3,5-triazino(1,2-a)benzimidazol-4(1H)-imine