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A partial packing diagram of (I), showing the formation of R44(22) ring motifs. Hydrogen bonds are shown as dashed lines [symmetry codes: (i) 3/2 - x, y, z - 1/2; (ii) x - 1/2, 1 - y, z; (iii) 3/2 - x, y, 1/2 + z]. H atoms not involved in hydrogen bondings have been omitted for clarity.
