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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1⋯N1	0.82	2.00	2.654 (4)	137
O5—H5⋯N3	0.82	1.86	2.582 (4)	146
N2—H2⋯O6i	0.91 (4)	1.99 (3)	2.833 (5)	155 (6)
N4—H4A⋯O2ii	0.90 (3)	2.04 (3)	2.888 (5)	158 (6)

Symmetry codes: (i) ; (ii) .