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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1A—H1A⋯O3A	0.82	1.77	2.503 (2)	149
O1B—H1B⋯O3B	0.82	1.78	2.508 (2)	148
N2A—H2A⋯O2A	0.86	1.88	2.600 (3)	140
N2B—H2B⋯O2B	0.86	1.88	2.596 (3)	139
N3A—H3A⋯O2i	0.86	2.34	2.968 (3)	130
N3A—H3A⋯O3A	0.86	2.21	2.710 (3)	117
N3B—H3B⋯O1ii	0.86	2.46	3.106 (6)	132
N3B—H3B⋯O3B	0.86	2.18	2.691 (3)	118
O2—H2⋯N4A	0.82	2.27	2.926 (3)	138
O1—H1⋯N4B	0.82	2.35	3.050 (6)	144

Symmetry codes: (i) ; (ii) .