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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O2—H2A⋯O1i	0.84 (1)	1.78 (1)	2.6226 (13)	178 (2)
O5—H5A⋯O4ii	0.86 (1)	1.74 (1)	2.6000 (13)	176 (2)
C19—H19⋯O6iii	0.95	2.60	3.447 (1)	148

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