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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O8—H1⋯O3v	0.89 (6)	1.87 (6)	2.734 (4)	162 (5)
O8—H2⋯O7vi	0.82 (6)	2.00 (6)	2.785 (4)	159 (5)
N1—H3⋯O1vii	0.91 (7)	1.86 (7)	2.717 (5)	156 (6)
N1—H4⋯O8viii	0.89 (6)	2.56 (7)	3.310 (6)	142 (5)
N1—H5⋯O7ix	0.96 (7)	1.99 (7)	2.859 (5)	150 (5)
N1—H6⋯O7	0.88 (7)	1.91 (7)	2.791 (5)	174 (6)

Symmetry codes: (v) ; (vi) ; (vii) ; (viii) ; (ix) .