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Figure 2 The packing of (I), with the O—H⋯O and N—H⋯O hydrogen bonds, and π—π interactions denoted by dashed lines. Hydrogen atoms not involved in hydrogen bonding have been omitted for clarity. [Symmetry codes: (i) −x, y − , −z + ; (ii) x, y + 1, z; (iii) −x, y + , −z + ] |