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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H11N⋯O1i	0.87 (3)	2.36 (3)	3.136 (3)	148 (2)
N1—H21N⋯O1ii	0.82 (2)	2.28 (2)	3.010 (2)	148 (2)
N2—H12N⋯O3iii	0.88 (2)	1.89 (2)	2.769 (2)	175 (2)
C5—H5⋯O3i	0.93	2.55	3.376 (2)	148
C8—H8A⋯O2iv	0.96	2.41	3.209 (3)	141

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