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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H12⋯O10	0.88	2.12	2.977 (4)	166
N2—H21⋯O1w	0.88	2.20	2.955 (9)	143
N7—H72⋯O10i	0.88	2.33	3.135 (5)	152
N8—H82⋯O4ii	0.88	2.21	3.064 (4)	164
O3—H3⋯O2	0.84	1.90	2.582 (5)	138
O9—H9⋯O7	0.84	1.95	2.612 (6)	134
O1w—H1w1⋯O11iii	0.84	1.91	2.720 (8)	160
O1w—H1w2⋯O6iv	0.84	1.94	2.762 (11)	166
O1w—H1w2⋯O8v	0.84	1.94	2.716 (11)	153

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