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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3C⋯O2i	0.85	1.90	2.715 (3)	159
O3—H3B⋯O1ii	0.85	1.91	2.736 (3)	162
N3—H3⋯O2iii	0.86	1.89	2.728 (4)	164

Symmetry codes: (i) ; (ii) ; (iii) .