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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H11⋯O4i	0.84 (2)	2.12 (2)	2.944 (1)	168 (1)
N1—H12⋯O3ii	0.89 (2)	1.91 (2)	2.795 (1)	174 (1)
N2—H21⋯O6	0.85 (2)	1.97 (2)	2.807 (1)	168 (1)
N2—H22⋯O4ii	0.92 (2)	1.95 (2)	2.851 (1)	164 (1)
N4—H41⋯O6ii	0.86 (2)	1.97 (2)	2.817 (1)	167 (1)
N4—H42⋯O7i	0.93 (2)	2.00 (2)	2.889 (1)	159 (1)
N5—H51⋯O7ii	0.90 (2)	1.99 (2)	2.879 (1)	172 (1)
N5—H52⋯O3iii	0.90 (2)	1.94 (2)	2.776 (1)	154 (1)

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