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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1o⋯O2	0.84	1.78	2.528 (4)	147
O4—H4o⋯O8	0.84	1.75	2.578 (4)	167
N1—H1n⋯O5i	0.88	2.10	2.763 (4)	132
N3—H3n⋯O4	0.88	1.88	2.592 (4)	137
O7—H7o⋯N2	0.84	2.16	2.900 (4)	148
O8—H8o⋯O7	0.84	2.00	2.704 (5)	140

Symmetry code: (i) .