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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N9—H9C⋯N10	0.89	2.10	2.965 (3)	163
N9—H9B⋯S1ii	0.89	2.44	3.314 (2)	167
N9—H9A⋯S2iii	0.89	2.49	3.370 (2)	168
N7—H7C⋯S1i	0.89	2.36	3.243 (2)	174
N7—H7B⋯S2iv	0.89	2.40	3.278 (2)	170
N7—H7A⋯S2v	0.89	2.57	3.411 (2)	159

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