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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1N⋯O2	0.933 (16)	1.792 (17)	2.6189 (13)	146.1 (14)
O1—H1⋯N2i	0.93 (2)	1.84 (2)	2.7494 (13)	169.1 (18)

Symmetry code: (i) .