(3E)-3-ethylidene-1,2,3,4,6,7,12,12b-octahydroindolo[2,3-a]quinolizine InChI=1/C17H20N2/c1-2-12-7-8-16-17-14(9-10-19(16)11-12)13-5-3-4-6-15(13)18-17/h2-6,16,18H,7-11H2,1H3/b12-2 indolo[2,3-a]quinolizine, 3-ethylidene-1,2,3,4,6,7,12,12b-octahydro-, (3E)-