157291-84-4 5-((3-Methyl-1-indolizinyl)carbonyl)-4,5,6,7-tetrahydro-1H-benzimidazole hydrochloride Methanone, (3-methyl-1-indolizinyl)(4,5,6,7-tetrahydro-1H-benzimidazol-5-yl)-, monohydrochloride, (R)- YM 26308-2 YM-26308-2