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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1B⋯N1i	0.833 (18)	2.021 (18)	2.8419 (10)	168.8 (17)
O1—H1A⋯O3ii	0.823 (18)	1.940 (18)	2.7599 (11)	174.0 (16)
O2—H2B⋯O3iii	0.790 (18)	1.996 (19)	2.7797 (11)	171.4 (18)
O2—H2A⋯N6iv	0.81 (2)	2.04 (2)	2.8472 (10)	173.7 (18)
O3—H3A⋯N5v	0.82 (2)	2.09 (2)	2.8922 (11)	164.2 (19)
O3—H3B⋯O1	0.80 (2)	2.30 (2)	3.0693 (12)	160 (2)
N8—H8⋯N4vi	0.926 (18)	1.792 (18)	2.7171 (10)	176.6 (16)

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