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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1H⋯O2i	0.88 (2)	1.77 (2)	2.6511 (14)	176 (2)
N1—H1N⋯O1ii	0.88 (2)	2.18 (2)	3.0433 (16)	167.6 (17)

Symmetry codes: (i) ; (ii) .