In the title compound, C22H38N4O, both the piperazine rings are in per
fect chair conformations and the substituents attached to the N atoms
of the piperazine rings are in equatorial positions. The tertiary buty
l group is oriented in such a way that the plane of the phenyl group n
early bisects the angle between two of the methyl C atoms of the butyl
group, while the third methyl C atom lies in the plane of the phenyl
ring.