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Figure 1 View of the title compound with the atom numbering scheme. Displacement ellipsoids for non-H atoms are drawn at the 50% probability level·H atoms have been omitted for clarity.[symmetry code:(i)x, y − 1, z; (ii) x − 1, y, z; (iii) −x − 1, −y + 2, −z + 2; (iv) −x, −y + 2, −z + 2]. |