1,4-Di-n-hept-yloxy-2,5-dinitro-benzene.

The complete molecule of the title compound, C(20)H(32)N(2)O(6), is generated by crystallographic inversion symmetry. The two mutually trans nitro substituents are hence in fully eclipsed conformation and also twisted by 43.2 (2)° with respect to the phenyl ring plane. The benzene-connected portions of the alk-oxy substituents lie almost coplanar with the ring [C-O-C-C torsion angle = 2.0 (2)°]. In the crystal, weak C-H⋯O interactions link the molecules.