4-(3,4-Dihydro-6,7-dimethoxy-2,3,3-trimethyl-1(2H)-isoquinolinylidene)butanenitrile HI Butanenitrile, 4-(3,4-dihydro-6,7-dimethoxy-2,3,3-trimethyl-1(2H)-isoquinolinylidene)-, hydriodide EK4850000