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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2⋯O1i	0.85 (1)	1.86 (2)	2.7042 (14)	175 (2)

Symmetry code: (i) .