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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2⋯N2	0.82	1.82	2.530 (4)	144
N1—H1⋯O1i	0.86	2.16	2.858 (4)	138

Symmetry code: (i) .