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Figure 1 The molecular structure showing the atomic-numbering scheme and displacement ellipsoids drawn at the 30% probability level. Hydrogen atoms were omitted for clarity. Symmetry codes: (A) −x, −1 − y, 2 − z; (B) 1 + x, y, z; (C) 1 − x, 1 − y, 1 − z; (D) −x, −y, 1 − z. |