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Figure 2 A view of the hydrogen bonding (blue dashed lines) and π-π stacking (purple dashed lines) interactions in (I). See the text for the designations of Cg1 and Cg2 [at (− + x, − y, 1 − z)]. Symmetry codes: (i) x + , −y + , −z + 1; (ii) −x, y + , −z + . |