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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O3i	0.86 (1)	2.00 (1)	2.841 (2)	166 (2)
N3—H3⋯O1wii	0.86 (1)	1.95 (1)	2.806 (2)	170 (2)
N6—H6⋯O2w	0.88 (1)	1.95 (1)	2.829 (2)	174 (2)
N8—H8⋯O3wiii	0.86 (1)	1.94 (1)	2.778 (2)	164 (2)
O3—H3o⋯O1w	0.84 (1)	1.84 (1)	2.673 (2)	177 (2)
O1w—H11⋯O1ii	0.84 (1)	2.00 (1)	2.821 (2)	166 (2)
O1w—H12⋯N5	0.84 (1)	1.91 (1)	2.751 (2)	175 (3)
O2w—H21⋯O2	0.85 (1)	2.07 (1)	2.905 (2)	172 (2)
O2w—H22⋯O2iv	0.84 (1)	1.93 (1)	2.764 (2)	176 (2)
O3w—H31⋯N4	0.84 (1)	1.94 (1)	2.773 (2)	169 (2)
O3w—H32⋯O2w	0.85 (1)	1.92 (1)	2.766 (2)	174 (2)

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