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Figure 1 The molecular structure of (I), showing displacement ellipsoids at the 30% probability level for non-H atoms. Dashed lines indicate the hydrogen-bonding interactions [Symmetry code; (I) −x + 1, −y, −z + 1; (II) −x + 1, −y + 2, −z + 2: (III) −x, −y + 1, −z + 1] |