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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯N1	0.81	1.89	2.603 (4)	147
O2—H2⋯N2	0.87	1.79	2.558 (5)	147