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Figure 1 The molecular structure of the title compound, showing displacement ellipsoids drawn at the 50% probability level. Hydrogen atoms are omitted for clarity [symmetry codes: (i) −x, −y + 2, −z; (ii) x, y + 1, z; (iii) −x + , y + ,-z + ; (iv) −x + , y + , −z − ; (v) −x + 1, −y + 2, −z]. |