In the title mol-ecule, C(17)H(20)ClNOS(2), the phenyl and oxazole rings are nearly coplanar with an average deviation of 0.022 Å from the mean plane (M). The 1,3-dithiane ring adopts a chair conformation and is twisted in such a way that the C-C(Bu) fragment lies in M (deviations are 0.031 and 0.010 Å, respectively, for the two C atoms).