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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H6⋯O1	0.89 (3)	1.95 (3)	2.7959 (18)	158 (2)
N2—H10⋯O3i	0.91 (2)	1.89 (2)	2.7949 (19)	170 (2)
O3—H12⋯O2ii	0.89 (2)	1.95 (3)	2.8319 (19)	171 (2)

Symmetry codes: (i) ; (ii) .