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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C1—H1B⋯O4ii	0.96	2.55	3.384 (4)	145
C2—H2B⋯O4ii	0.96	2.53	3.370 (4)	146
C2—H2C⋯O2iii	0.96	2.46	3.378 (4)	160

Symmetry codes: (ii) ; (iii) .