Both quinolizidine moieties of [7S-(7 alpha,7a alpha,14 alpha,14a alph
a)]-dodecahydro-4-methyl-7, 14-methano-2H,6H-dipyrido-[1,2-a:1',2'-e][
1, 5]diazocine-4-carbonitrile, C22H29N3, have trans configurations, an
d the piperidine rings A, B, C and D assume chair, chair, boat and cha
ir conformations, respectively. The phenyl substituent is in an equato
rial orientation, while that of the cyano substituent is axial.