In the title compound, C(9)H(12)N(2)O(7)S(2), the nitro substituent is slightly twisted from the benzene ring [dihedral angle = 14.69 (10)°]. The mol-ecular geometry is stabilized by intra-molecular C-H⋯O hydrogen bonds, forming S(6) ring motifs. In the crystal, molecules are linked by C-H⋯O hydrogen bonds into layers parallel to (10-2).