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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C9—H9A⋯Cg1	0.96	2.66	3.578 (2)	160

Cg1 is the centroid of the C3–C8 ring.