1-(2-Ethoxyethyl)-2-((4-methyl-1-piperazinyl)methyl)benzimidazole monofumarate semihydrate 1H-Benzimidazole, 1-(2-ethoxyethyl)-2-((4-methyl-1-piperazinyl)methyl)-, (E)-2-butenedioate, hydrate (2:2:1) 95893-98-4