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Figure 2 Intermolecular contacts, viewed along [0 − 1 0]. Blue dashed lines indicate clasical intermolecular hydrogen bonds, red dashed lines indicate classical intramolecular hydrogen bonds, green dashed lines intermolecular C–H⋯O contacts and yellow dashed lines intramolecular C–H⋯O contacts. Symmetry operators: i −x + , y − , z + 7/4; ii x − , −y + , z + ; iii x − , −y + , z − ; iv x + , −y + , z − ; v −x + , y + , z − 7/4. |