Acta Cryst. (2004). E60, o852-o854 [ doi:10.1107/S1600536804009195 ]
Abstract: Molecules of the title compound, C10H10N2O5, lie on mirror planes in space group Ibam. The molecules are linked into  chains by an aromatic - stacking interaction, and pairs of these chains are linked by a single C-HO hydrogen bond.
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