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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1n⋯O2	0.94 (2)	1.83 (2)	2.609 (2)	138.7 (16)
O1—H1o⋯O2i	0.96 (2)	1.63 (2)	2.590 (2)	176.1 (17)

Symmetry code: (i) .