Table 2. Hydrogen-bond geometry (Å, °).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H9⋯O6i	0.85 (2)	2.15 (4)	2.979 (15)	162 (8)
N2—H10⋯O5ii	0.85 (2)	2.43 (8)	3.121 (13)	138 (10)
O7—H16⋯O4iii	0.85 (2)	1.80 (2)	2.639 (6)	169 (7)
O3—H8⋯O8iv	0.86 (2)	1.79 (3)	2.640 (6)	167 (7)
N1—H1⋯O2v	0.85 (2)	2.15 (3)	2.996 (15)	170 (9)
N1—H2⋯O1vi	0.85 (2)	2.30 (8)	2.998 (13)	139 (10)
N1—H2⋯O5vii	0.85 (2)	2.42 (7)	3.117 (13)	140 (10)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) ; (vi) ; (vii) .