(-)-Ervayunine 120202-64-4 2H-3,13-Methanooxireno(9,10)azacycloundecino(5,4-b)indole, 13-ethyl-1a,4,5,10,11,12,13,13a-octahydro-, (1aS,13R,13aR)- 2H-3,13-Methanooxireno(9,10)azacycloundecino(5,4-b)indole, 13-ethyl-1a,4,5,10,11,12,13,13a-octahydro-, (1aS-(1aR*,13S*,13aS*))- Ervayunine