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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1O⋯O4	0.81 (2)	1.86 (2)	2.600 (2)	152 (2)
N1—H1N⋯O9	0.81 (2)	2.22 (2)	2.994 (2)	162 (2)
O6—H6O⋯O9	0.81 (2)	1.91 (2)	2.634 (2)	147 (2)
N2—H2N⋯O3i	0.83 (2)	2.13 (2)	2.966 (2)	175 (2)
C4—H4⋯O8ii	0.95	2.36	3.259 (2)	158
C20—H20A⋯O2i	0.98	2.51	3.267 (2)	134

Symmetry codes: (i) ; (ii) .