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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2A⋯N1	0.85 (1)	1.75 (1)	2.580 (2)	168 (3)
N2—H2⋯O1i	0.86	1.89	2.742 (2)	173

Symmetry code: (i) .