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Figure 1 Structure of the title compound. Displacement ellipsoids are drawn at the 50% probability level. H atoms have been omitted for clarity. [Symmetry codes: (i) −x, −y − 1, −z; (ii) x − 1, y − 1, z − 1; (iii) −x, −y − 2, −z; (iv) x + 1, y + 1, z + 1; (v) −x + 1, −y, −z + 1; (vi) x, y + 1, z; (vii) −x − 1, −y − 2, −z − 1.] |