2H-benzo[a]quinolizine, 11b-ethenyl-1,3,4,6,7,11b-hexahydro-9,10-dimethoxy- 9,10-dimethoxy-11b-vinyl-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinoline InChI=1/C17H23NO2/c1-4-17-8-5-6-9-18(17)10-7-13-11-15(19-2)16(20-3)12-14(13)17/h4,11-12H,1,5-10H2,2-3H