Figure 1
A fragment of the crystal structure of the title compound, with atom labelling. Displacement ellipsoids are drawn at 50% probability level [symmetry codes: (i) −x + , −y + , −z + 1; (ii) −x + 1, −y, −z + 1; (iii) −x + 1, y, −z + ; (iv) x, −y, z + ]. |