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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O8—H8A⋯O6i	0.82	1.92	2.7264 (18)	168
O8′—H8′⋯O3′ii	0.82	1.92	2.7308 (17)	172

Symmetry code: (i) ; (ii) .