(7R,7aR,14R,14aS)-Dodecahydro-7,14-methano-4H,6H-dipyrido[1,2-a:1',2'-e][1,5]diazocine-4-one

[7R,7aα,14aβ,(-)]-Dodecahydro-7β,14β-methano-4H,6H-dipyrido[1,2-a:1',2'-e][1,5]diazocine-4-one