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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3A⋯N2i	0.93	1.90	2.820 (5)	171
O3—H3B⋯O2ii	1.03	1.71	2.704 (4)	161

Symmetry codes: (i) ; (ii) .