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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—–H1⋯..O4i	0.82	1.97	2.748 (3)	159
O3—–H3A⋯..O2ii	0.82	2.03	2.792 (3)	155
C8—–H8B⋯..O3iii	0.97	2.53	3.410 (3)	151
C20—–H20B⋯..O1iv	0.97	2.50	3.354 (3)	147

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .