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Figure 2 A partial packing diagram of the title compound. For the sake of clarity, H atoms not involved in hydrogen bonding have been omitted. Hydrogen bonds are shown as dashed lines. Selected atoms are labelled. [Symmetry codes: (i) x, y + 1, z; (ii) −x + 1, −y + 1, z + ; (iii) −x + 1, −y + 1, z − ; (iv) x, y − 1, z]. |