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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯O3i	0.82	1.80	2.6140 (17)	172
O5—H5⋯O7ii	0.82	1.80	2.6066 (18)	169
N1—H1A⋯O2iii	0.90	2.23	2.8636 (19)	128
N1—H1A⋯O3iv	0.90	2.30	3.0279 (19)	138
N1—H1B⋯O3	0.90	2.14	2.9251 (18)	145
N1—H1B⋯O2i	0.90	2.35	2.9892 (18)	128
N2—H2⋯O7	0.91	2.02	2.8216 (16)	146
N2—H2⋯O6ii	0.91	2.32	2.9037 (17)	122

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