Fig. 2.

A view of the C—H···O interactions (dotted lines) in the crystal structure of the title compound. [Symmetry codes: (i) x, - y + 1/2, z + 1/2; (ii) x, y + 1, z; (iii) x, - y +1/2 , z - 1/2; (iv) x, y - 1, z.]