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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯N2i	0.86	2.16	3.007 (3)	170
N1—H1B⋯O2ii	0.86	2.00	2.848 (2)	169

Symmetry codes: (i) ; (ii) .