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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1′⋯O2i	0.84 (1)	1.92 (1)	2.7583 (13)	174 (2)
N1—H1A⋯O31ii	0.86 (1)	2.21 (1)	3.0661 (15)	177 (1)
N1—H1B⋯O1iii	0.86 (1)	2.43 (1)	3.1854 (15)	147 (1)
O2—H2′⋯O31	0.84 (1)	1.91 (1)	2.7159 (13)	161 (2)
O31—H31A⋯N1iv	0.84 (1)	2.07 (1)	2.9040 (15)	173 (2)
O31—H31B⋯O1v	0.84 (1)	2.05 (1)	2.8810 (13)	170 (2)

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