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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2OB⋯N1i	0.88 (1)	2.10 (2)	2.924 (1)	158 (2)
O2—H2OA⋯O1ii	0.88 (1)	2.05 (1)	2.904 (1)	164 (2)
N2—H2N⋯O2	0.87 (1)	1.92 (1)	2.785 (1)	177 (2)
C5—H5A⋯O1iii	0.95	2.56	3.351 (2)	141
C3—H3A⋯Cg3iv	0.95	2.66	3.502 (1)	148

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