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Figure 1 A perspective view diagram of the structure of (I) together with asymmetric units. Displacement ellipsoids are drawn at the 50% probability level. [Symmetry codes: (i) 1 − x, 1 − y, −z, (ii) 1 + x, y − 1, z, (iii) −x + 2, −y, −z, (vii) x − 1, y + 1, z]. |