1H,5H,8H,13H-Cyclohexadeca[1,2,3-ij:9,10,11-i'j']diquinolizine-1,13-dione,tetracosahydro-2,14-dimethyl-, (2R*,7aS*,12aR*,14R*,19aS*,19bS*,24aR*,24bS*)-(?à)-