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

Cg2 and Cg4 are the centroids of the C6–C11 and C17–C22 rings, respectively.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O2	0.89 (3)	2.03 (3)	2.914 (3)	175 (3)
N3—H3⋯O1i	0.89 (2)	2.03 (2)	2.902 (3)	167 (2)
C8—H8⋯Cg4ii	0.93	2.94	3.655 (4)	134
C18—H18⋯Cg2ii	0.93	2.82	3.594 (4)	141

Symmetry codes: (i) ; (ii) .