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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯N3i	0.86	2.14	2.999 (3)	177
N1—H1B⋯O3ii	0.86	1.98	2.830 (3)	173
N2—H2A⋯O4ii	0.86	1.74	2.593 (3)	175
N4—H4A⋯N6iii	0.86	2.19	3.046 (3)	175
N4—H4B⋯O1iv	0.86	2.00	2.851 (3)	173
N5—H5A⋯O2iv	0.86	1.75	2.606 (3)	174
C1—H1C⋯O4ii	0.96	2.56	3.355 (4)	140
C7—H7A⋯O2iv	0.96	2.57	3.355 (4)	139

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