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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1O⋯N1	0.84 (1)	1.93 (3)	2.694 (3)	151 (6)
O2—H2O⋯S1i	0.84 (1)	2.54 (1)	3.365 (2)	170 (4)
N2—H2N⋯O1ii	0.87 (1)	2.11 (1)	2.950 (4)	162 (3)

Symmetry codes: (i) ; (ii) .