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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2N⋯O1i	0.864 (17)	1.936 (17)	2.7852 (15)	167.4 (16)
C7—H7⋯N3ii	0.95	2.54	3.339 (2)	142
C8—H8⋯N3iii	0.95	2.52	3.424 (2)	158
C18—H18⋯O1i	0.95	2.53	3.365 (2)	147

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