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

Cg2 is the centroid of the C1–C6 benzene ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C18—H18b⋯Cg2i	0.96	2.66	3.471 (3)	142

Symmetry code: (i) .