The title compound, C
27H
19NO
2S, contains chains of fused
(19) rings formed by intermolecular C—H
O=C hydrogen bonds and running along the [011] and [0
1] directions. These chains are linked through short intermolecular C—H
π contacts, giving rise to sheets. The conformation of the title compound is dominated primarily by the nearly orthogonal lone-pair orbitals on the N and S atoms.