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| Figure 1 The structure of (I), with displacement ellipsoids drawn at the 30% probability level. Dotted lines indicate hydrogen bonds. Unlabelled atoms are generated by the inversion operation (1 − x, 1 − y, 1 − z). |
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| Figure 1 The structure of (I), with displacement ellipsoids drawn at the 30% probability level. Dotted lines indicate hydrogen bonds. Unlabelled atoms are generated by the inversion operation (1 − x, 1 − y, 1 − z). |