1H-Pyrrolo(3,4-d)pyrimidin-2(3H)-one, 4,7-diphenyl-3-ethyl-5-methyl-, hydrochloride 4,7-Diphenyl-3-ethyl-5-methyl-1H-pyrrolo(3,4-d)pyrimidin-2(3H)-one hydrochloride 61948-13-8