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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O7—H7A⋯O4iii	0.85	2.17	2.9384	149
O7—H7B⋯O6iv	0.85	2.28	3.0438	150
C3—H3⋯O2	0.93	2.46	2.7741	100

Symmetry codes: (iii) ; (iv) .