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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯O2	0.87 (2)	1.87 (2)	2.6457 (12)	147 (2)
O1—H1⋯O2i	0.87 (2)	2.32 (1)	3.0067 (11)	134 (9)

Symmetry code: (i) .