In the title compound, C13H11N3O4, the substituted aromatic ring has a
slightly deformed chair conformation and the unsubstituted ring a def
ormed boat conformation. The dihedral angle between the mean planes of
the rings is 62.9(1)degrees. The o-nitro group is twisted out of the
plane of the phenyl ring. Short C-H ... O intermolecular lar contacts
stabilize the three-dimensional structure.