1,4-Butanediamine, N,N'-bis(3-(dipyrido(1,2-a:3',2'-d)imidazol-2-ylamino)propyl)- 98105-11-4 N,N'-Bis(3-(dipyrido(1,2-a:3',2'-d)imidazol-2-ylamino)propyl)-1,4-butanediamine