99700-08-0 Guanidine, N-cyano-N'-((1-ethyl-4,5,6,7-tetrahydro-1H-benzimidazol-5-yl)methyl)-N''-methyl- N-Cyano-N'-((1-ethyl-4,5,6,7-tetrahydro-1H-benzimidazol-5-yl)methyl)-N''-methylguanidine