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

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O1—H1O⋯O1i	0.87 (3)	2.17 (3)	2.916 (2)	143 (2)
O1—H1O⋯N1	0.87 (3)	2.24 (3)	2.701 (3)	113 (2)
C2—H2⋯O1i	0.95	2.53	3.382 (3)	150
C18—H18C⋯Cgii	0.98	2.57	3.504 (3)	160

Symmetry codes: (i) ; (ii) .