The title mol-ecule, C(18)H(17)NO(4)S, features a 1,3-thia-zolidine ring that is twisted about the S-C(methyl-ene) bond. With reference to this ring, the 1,3-benzodioxole and benzene rings lie to either side and form dihedral angles of 69.72 (16) and 83.60 (14)°, respectively, with the central ring. Significant twisting in the mol-ecule is confirmed by the dihedral angle of 79.91 (13)° formed between the outer rings. Linear supra-molecular chains along the a-axis direction mediated by C-H⋯O inter-actions feature in the crystal packing.