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

Cg4 is the centroid of the C23–C28 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C14—H14⋯O19i	0.93	2.56	3.462 (4)	162
C18—H18C⋯Cg4ii	0.96	2.69	3.595 (4)	158

Symmetry codes: (i) ; (ii) .