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Figure 3 Part of the crystal structure of (I) showing C—H⋯O hydrogen bonds (dotted lines), with the formation of R33(19) ring motifs along [010] [Symmetry codes: (i)5/2-x, −1/2+y, 3/2-z; (ii)x, −1+y, z; (vii)5/2-x, −3/2+y, 3/2-z; (viii)x, −2+y, z; (ix)5/2-x, −5/2+y, 3/2-z]. |