Figure 1
The asymmetric unit of title compound, showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. [Symmetry codes: (i) x − , −y + , −z + 1; (ii) −x, y − , −z + ; (iii) −x, y + , −z + ; (iv) x + , −y + , −z + 1.] |