When viewed down the central S⋯N axis of the title compound, C(20)H(26)N(2)O(3)S, it is apparent that the mol-ecule adopts a gauche conformation with all O atoms lying to one side of the central benzene ring; the carbonyl O atom is directed away from the central ring and the N-bound ethyl groups lie to one side of the mol-ecule. Supra-molecular helical chains aligned along the b axis and sustained by C-H⋯O contacts feature in the crystal packing. These are consolidated in the three-dimensional structure by C-H⋯π inter-actions.