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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O1i	0.86	2.24	3.0232 (9)	152
N1—H1B⋯O3ii	0.86	2.07	2.8622 (8)	153
N2—H2A⋯O1iii	0.90	2.37	3.0589 (8)	133
N2—H2A⋯O2iii	0.90	1.94	2.7475 (9)	149
N2—H2B⋯O1iv	0.90	1.87	2.7509 (9)	164

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