In the crystal structure of the title compound, C(16)H(16)N(2)O(6)S(2), the conformation of the N-C bonds in the C-SO(2)-NH-C(O)-C segments have gauche torsions with respect to the S=O bonds, while the conformations of the N-H and C=O bonds in the amide fragments are trans to each other and the amide O atom is anti to the H atoms attached to the adjacent C atom. The mol-ecule is bent at the S atom with a C-SO(2)-NH-C(O) torsion angle of 65.2 (2)°. The molecule lies about a centre of inversion. The dihedral angle between the benzene ring and the SO(2)-NH-C(O)-C(2) segment in the two halves of the mol-ecule is 77.4 (1)°. The structure exhibits both intra-molecular and inter-molecular hydrogen bonds. A series of N-H⋯O(S) hydrogen bonds links the mol-ecules into infinite chains.