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Figure 1 A structural unit of the title compound with atom labelling scheme and 50% probability displacement ellipsoids. Symmetry codes: i −x + 2, −y, −z + 2; ii −x + 2, −y + 1, −z + 2; iii −x + 2, −y, −z + 3; iv −x + 2, −y + 1, −z + 1. |
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