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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯N4i	0.93 (3)	2.04 (3)	2.969 (3)	172 (2)
O3—H3A⋯N3ii	0.77 (3)	2.05 (3)	2.806 (3)	170 (3)
C16—H16A⋯O3ii	0.96	2.47	3.290 (4)	143

Symmetry codes: (i) ; (ii) .