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Figure 1 The molecular structure of (I), with the atom-numbering scheme [symmetry codes:(i) y,-x + y,-z; (ii) −x + y, −x, z; (iii) −x, −y, −z; (iv) −y, x-y, z; (v) x-y, x, −z; (vi) −x + ,-y + ,-z + ]. Displacement ellipsoids are drawn at the 50% probability level. |