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Figure 2 A view of the crystal packing, showing the π-π stacking and intermolecular hydrogen bonds interaction. H atoms have been omitted. [Symmetry codes: (A) x, −y + , z − ; (B) x, y, z + 1; (C) x, −y + , z − ; (AA) x, −y + , z − ; (D) −x + 1, −y + 1, −z; (E) −x + 1, y + , −z + ; (F) −x + 1, −y + 1, −z + 1; (G) −x + 1, y + , −z + ] |