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Figure 1 View of the asymmetric unit of the title compound with labeling and displacement ellipsoids drawn at the 50% probability level. The dashed lines indicate N—H⋯O and O—H⋯O hydrogen bonds (see Table 1 for details). Symmetry codes: (i) −x − 1, −y − 1, −1 − z; (ii) −x + 1, −y − 1, −z. |