In the title mol-ecule, C(9)H(9)N(3)O(9), the three neighbouring nitro groups are tilted with respect to the benzene mean plane by 75.8 (1), 27.7 (1) and 68.1 (1)°. The methyl C atoms of the three neighbouring meth-oxy groups deviate from this plane by 0.976 (4), -1.425 (4) and 0.632 (4) Å. The crystal packing exhibits weak C-H⋯O inter-actions.