Figure 1
The molecular structure of the title compound, showing the atom labelling and displacement ellipsoids drawn at the 40% probability level for the two crystallographically independent molecules. Disordered atoms are drawn with 40% transparency and labelled C20A, C21A, C22A, C23A, H19A and H19B [s.o.f. = 0.821 (3)] and C20B, C21B, C22B, C23B, H19C and H19D [s.o.f. = 0.179 (3)]. The remaining H atoms were omitted for clarity. |