Conformational isomers in (2RS,3SR,6SR)-3-ethyl-2,6-diphenyl-1-phenyl­acetyl-4-piperidone determined from synchrotron data at 120 K

In the title compound, C27H27NO2, the conformations of the two independent mol­ecules differ in the shape of the piperidone rings, the orientation of the N-acyl substituents and the axial/equatorial disposition of the ethyl and phenyl groups. The mol­ecules are linked into complex chains by four independent C—H⋯O hydrogen bonds.