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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯I1i	0.86	2.86	3.693 (5)	165
C2—H2A⋯I1ii	0.98	3.03	3.950 (5)	158

Symmetry codes: (i) ; (ii) .