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Figure 2 . The crystal packing of (I), showing one layer of molecules connected by O–H⋯O hydrogen bonds (dashed lines). H atoms not involved in hydrogen bonding have been omitted. [Symmetry codes: (i) x, y − 1, z; (ii) x, y − 1, z + 1; (iii) x + 1, y, z; (iv) −x, −y + 1, −z + 1; (v) −x, −y + 1, −z + 2.] |