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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C1—H1A⋯I1	0.96	2.70	3.316 (11)	122
C10—H10A⋯I2	0.96	2.70	3.303 (10)	122
C18—H18A⋯I3	0.96	2.63	3.252 (10)	123