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Figure 1 The molecular structure of the title compound, showing displacement ellipsoids at the 50% probability level for non-H atoms, disordered O5′ atom has been omitted for clarity, Symmetry codes: (I) −2 − x, −y, −z; (II) −2 + x, y, −1 + z; (III) −x, −y, 1 − z. |