(-)-Calycosidine 112262-96-1 5,10b:11,4b-Bis(iminoethano)dibenzo(c,h)(2,6)naphthyridine, 5,6,11,12-tetrahydro-13,18-dimethyl-1-((3aR,8aR)-2,3,8,8a-tetrahydro-1-methylpyrrolo(2,3-b)indol-3a(1H)-yl)-, (4bR,5R,10bS,11S)- Calycosidine