1-(2-(n-Propoxy)ethyl)-2-(4-methyl-1-homopiperazinyl)benzimidazole difumarate 1H-Benzimidazole, 2-(hexahydro-4-methyl-1H-1,4-diazepin-1-yl)-1-(2-propoxyethyl)-, (E)-2-butenedioate (1:2) 87250-52-0