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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2N⋯O4i	0.88	2.09	2.908 (4)	155
N3—H3N⋯O3ii	0.88	2.21	3.056 (4)	163
C5—H5⋯O2iii	0.95	2.28	3.093 (5)	143
C19—H19⋯O1iv	0.95	2.44	3.365 (5)	164
C21—H21C⋯O1v	0.98	2.64	3.490 (5)	145

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