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

Cg2 is the centroid of the C11–C14/C20/C21 ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O15—H15⋯N1i	0.88 (2)	2.00 (2)	2.828 (2)	156 (2)
C2—H2B⋯Cg2ii	0.97	2.87	3.766 (2)	154

Symmetry codes: (i) ; (ii) .