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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O5i	0.91	2.02	2.828 (2)	147
N1—H1A⋯O4i	0.91	2.41	3.215 (2)	147
N1—H1A⋯N2i	0.91	2.58	3.465 (3)	164
N1—H1B⋯O4ii	0.91	2.06	2.951 (3)	168
N1—H1B⋯O3ii	0.91	2.47	3.022 (2)	119
N1—H1B⋯N2ii	0.91	2.60	3.390 (3)	146
N1—H1C⋯O1	0.91	1.90	2.760 (2)	157
O2—H2C⋯O5	0.84	1.81	2.646 (2)	175
O2—H2C⋯N2	0.84	2.60	3.376 (2)	154

Symmetry codes: (i) ; (ii) .