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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N3—H3A⋯O2i	0.86	2.63	3.196 (3)	124
N3—H3B⋯N4ii	0.86	2.22	3.067 (3)	169
C19—H19⋯O2iii	0.93	2.54	3.294 (4)	139

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