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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯I1	0.90	2.77	3.612 (5)	156
N2—H2A⋯I1i	0.90	2.74	3.622 (4)	166

Symmetry code: (i) .