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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O7—H7A⋯O5iv	0.85	2.10	2.836 (4)	145
O7—H7B⋯O2v	0.85	1.94	2.738 (4)	156
O8—H8A⋯N2vi	0.85	1.96	2.799 (4)	169
O8—H8B⋯O3iii	0.85	2.05	2.873 (3)	163

Symmetry codes: (iii) ; (iv) ; (v) ; (vi) .