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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O2	0.88	1.90	2.660 (3)	144
N2—H2A⋯O2i	0.88	1.91	2.785 (3)	171

Symmetry code: (i) .