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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2o⋯O5	0.84	1.76	2.595 (9)	170
O4—H4o⋯O6	0.84	1.82	2.657 (6)	175
N2—H2⋯O7	0.88	1.89	2.713 (6)	156
N3—H3⋯O7	0.84	2.18	2.940 (6)	151
N5—H5⋯O8	0.88	1.90	2.717 (6)	154
N6—H6⋯O8	0.84	2.08	2.841 (6)	150