Table 1. Hydrogen-bond geometry (Å, °).

Cg2 is the centroid of the C4–C9 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C8—H8⋯O2i	0.93	2.59	3.4783 (19)	161
C5—H5⋯Cg2ii	0.93	2.78	3.4959 (16)	134

Symmetry codes: (i) ; (ii) .