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

Cg5 is the centroid of the C15–C20 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C1—H1⋯O2	0.93	2.34	2.935 (3)	121
C1—H1⋯O2i	0.93	2.62	3.443 (3)	148
C9—H9⋯O1	0.93	2.35	2.949 (3)	122
C9—H9⋯O1ii	0.93	2.57	3.382 (2)	146
C13—H13⋯Cg5iii	0.93	2.82	3.604 (2)	143

Symmetry codes: (i) ; (ii) ; (iii) .