Figure 1
The asymmetric unit of the title compound showing the atom labelling with 50% probability displacement ellipsoids. Unlabelled atoms are related to labelled atoms by the symmetry operations −x, −y + 2, −z for molecule A, −x + 1, −y + 1, −z for molecule B, −x + 1, −y, −z + 1 for molecule C and −x + 2, −y + 1, −z + 1 for molecule D. |