Figure 1
The molecular structure of the title compound viewed down the b axis. The unit cell is superimposed, one-fifth of the original size. Displacement ellipsoids are shown at the 60% probability level. [Symmetry codes: (i) 1 − x, −y, −z; (ii) 1 − x, y, ½ − z; (iii) x, −y, z − ½; (iv) x, y, z − 1.] |