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Figure 3 Packing diagram of (I) shown along the a axis. All hydrogen atoms not involved in hydrogen bonding were omitted for clarity. Hydrogen bonds are shown with dashed lines. [Symmetry codes: (i) x − , −y + , −z + 1; (ii) −x + , y − , z; (iv) −x, −y + 1, −z + 1; (v) x + , −y + , −z + 1; (vi) −x + 1, −y + 2, −z + 1; (vii) −x + , y + , z]. |