1,3-Bis(5-chloro-2,1,3-benzothiadiazol-4-yl)-1-(4,5-dihydro-1H-imidazol-2-yl)guanidine; 1,3-Bis(5-chlorobenzo[c][1,2,5]thiadiazol-4-yl)-1-(4,5-dihydro-1H-imidazol-2-yl)guanidine; Guanidine,N,N`-bis(5-chloro-2,1,3-benzothiadiazol-4-yl)-N-(4,5-dihydro-1H-imidazol-2-yl)