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

Cg2 and Cg3 are the centroids of the C1–C6 and C10–C15 benzene rings, respectively.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1n⋯N3	0.87 (3)	2.04 (2)	2.568 (3)	118 (2)
N2—H2n⋯N5i	0.87 (3)	2.17 (3)	3.029 (3)	171 (2)
C16—H16B⋯O1ii	0.98	2.44	3.398 (3)	165
C20—H20⋯O1i	0.95	2.51	3.226 (3)	133
C17—H17A⋯Cg2iii	0.99	2.80	3.391 (3)	119
C18—H18B⋯Cg3iv	0.99	2.78	3.569 (2)	137

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .