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Figure 2 . A partial view of the crystal packing viewed along the b-axis showing the arrangement of the molecules into chains parallel to the a-axis stabilized by weak C—H⋯π interactions (dotted lines). Cg1 is the center of gravity of C13–C18. H-atoms (except those which are involved in H-bonding) have been omitted for clarity. Symmetry codes: (i) −x + 1.5, −y + 1, z + ; (ii) –x+2, y − , −z + . |