Table 5. Hydrogen-bond geometry (Å, °) for 2 .

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯N3	0.84	1.87	2.7051 (14)	174
O2—H2⋯N6	0.84	1.89	2.7312 (14)	178
N1—H1A⋯N5	0.88	2.13	2.9896 (14)	164
N1—H1B⋯O1i	0.88	1.94	2.8233 (13)	176
N4—H4A⋯N2	0.88	2.10	2.9739 (14)	173
N4—H4B⋯O2ii	0.88	2.00	2.8639 (14)	167
C9—H9A⋯O1iii	0.99	2.55	3.439 (2)	150

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