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Figure 2 The molecular packing for C13H9N3O6 viewed down the c axis. Dashed lines indicate intermolecular O–H⋯O, C–H⋯O and intramolecular N–H⋯O hydrogen bonds. The predominately occupied (0.64) hydrogen atom (H2O) is shown attached to O2 while H1O at 0.36 occupancy is not depicted. |