1,2,3,4,6,7,12,12b-Octahydroindolo[2,3-a]quinolizine 4802-79-3 Indolo[2,3-a]quinolizidine Indolo[2,3-a]quinolizine, 1,2,3,4,6,7,12,12b-octahydro- Indoloquinolizidine NSC112669