1-(2-Phenoxyethyl)-2-(4-methyl-1-piperazinyl)benzimidazole fumarate (2:3) 1H-Benzimidazole, 2-(4-methyl-1-piperazinyl)-1-(2-phenoxyethyl)-, (E)-2-butenedioate (2:3) 2-(4-Methyl-1-piperazinyl)-1-(2-phenoxyethyl)-1H-benzimidazole (E)-2-butenedioate (2:3) 87233-78-1