113458-70-1 BRN 5649003 Pyrimido(5,4-e)-1,2,4-triazine-3,5,7(6H)-trione, 2,4,4a,8-tetrahydro-4a-(2,3-dihydro-2-thioxo-1H-benzimidazol-5-yl)-6,8-dimethyl-