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Figure 1 Part of the polymeric chain structure of (I), showing the atom-numbering scheme and displacement ellipsoids drawn at the 50% probability level. All H atoms have been omitted for clarity. [Symmetry codes: (A) −x + 0.5, −y + 1.5, z; (B) −x, −y + 1, −z; (C) x − 0.5, y − 0.5, −z; (D) −x − 0.5, −y + 0.5, z.] |