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Figure 2 A fragment of the packing diagram of the title compound, with displacement ellipsoids shown at the 50% probability level (H atoms, except H atoms attached to N1 atom, are omitted for clarity). Symmetry transformations used to generate equivalent atoms: (i) −x + 1, −y + 1, −z; (ii) x, −y + 1, z + ; (iii) −x + , y, −z + . |