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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H1⋯O3i	0.86	2.17	2.929 (5)	148
O3—H21⋯N2ii	0.85	2.02	2.835 (4)	160
O3—H22⋯O1iii	0.85	1.98	2.822 (5)	171
O4—H23⋯O1iv	0.85	2.09	2.830 (7)	146
O4—H24⋯O3v	0.85	2.07	2.831 (6)	150

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