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Figure 2 Intermolecular contacts, viewed along [−1 0 0]. Depicted are intramolecular (green dashed lines) as well as intermolecular (blue dashed lines) hydrogen bonds and C–H⋯π contacts (red dashed lines). Symmetry operators: i −x + 1, y − , −z + ; ii −x + 1, y + , −z + . |