13-Benzyl-4,11-dihy-droxy-1,8-diphen-yl-2,9-di-thia-13-aza-dispiro-[4.1.4.3]tetra-decan-6-one.

In the title compound, CHNOS, the piperidine ring adopts a distorted chair conformation. The thio-phene rings have twisted conformations about the C-C bonds. The mean plane of the piperidine ring makes a near orthogonal conformation with the toluene ring.