In the title compound, C19H24N2O4S2, the dihedral angle formed by the benzene rings is 82.88 (7)°, and the molecular conformation is enforced by weak intramolecular C—H⋯O contacts. Two C atoms of the 1,4-diazepane ring are disordered over two sets of sites with a refined occupancy ratio of 0.534 (13):0.466 (13). In the crystal, molecules are linked by weak intermolecular C—H⋯O interactions into chains parallel to the a axis
