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Figure 1 A view of the asymmetric unit of title compound showing the atom labelling scheme. Ellipsoids are drawn at the 30% probability level. [Symmetry codes: (i) −x, 1 − y, −z; (ii) −x, y, −z; (iii) x, 1 − y, z; (iv) 1 − x, 1 − y, −z; (v) 1 − x, y, −z; (vi) − x, − y, 1 − z]. (iv) x, −y + 1, z; (v) −x, −y + 1, −z; (vi) −x, y, −z. |