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Figure 2 Intermolecular contacts, viewed approximately along [−1 − 1 0]. Blue dashed lines indicate classical hydrogen bonds while green dashed lines indicate C–H⋯O contacts. Symmetry operators: (i) x, y, z + 1; (ii) −x + 1, −y + 1, −z + 1; (iii) −x + 1, −y + 2, −z; (iv) x − 1, y, z; (v) x, y, z − 1. |