1-(2-Phenoxyethyl)-2-(4-methyl-1-homopiperazinyl)benzimidazole difumarate 1H-Benzimidazole, 2-(hexahydro-4-methyl-1H-1,4-diazepin-1-yl)-1-(2-phenoxyethyl)-, (E)-2-butenedioate (1:2) 87233-74-7