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Figure 1 The structure of the title compound. Displacement ellipsoids are shown at the 50% probability level. Hydrogen bonds are indicated by dashed lines. [Symmetry codes: (i) −x, 2-y, −z; (ii) 1/2-x, + y, 1/2-z; (iv) −x, 2-y, 1-z; (v) − + x, 3/2-y, + z.] |