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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯N4i	0.86	2.10	2.944 (4)	165
C15—H15A⋯O2ii	0.93	2.45	3.382 (4)	177
C18—H18A⋯O2ii	0.93	2.39	3.319 (4)	174
C3—H3B⋯Cg1i	0.96	2.86	3.560 (3)	131
C12—H12B⋯Cg2iii	0.96	2.90	3.788 (3)	154

Symmetry codes: (i) ; (ii) ; (iii) . Cg1 and Cg2 are the centroids of the C6–C11 and N2/N3/C13–C16 rings, respectively.