2,7-dihydro-7-phenyl-2-(phenylmethyl)-5-propoxy-3H-imidazo(1,2-c)pyrazolo(4,3-e)pyrimidine, R(-)-isomer
2,7-dihydro-7-phenyl-2-(phenylmethyl)-5-propoxy-3h-imidazo(1,2-c)pyrazolo(4,3-e)pyrimidine, r(-)-isomer