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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1A⋯O2	0.89	1.80	2.684 (3)	170
N1—H1B⋯O1ii	0.89	1.81	2.695 (2)	174

Symmetry code: (ii) .