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

Cg5 is a centroid of the C16–C21 benzene ring.

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3A⋯N2	0.85 (6)	1.87 (6)	2.642 (8)	150 (5)
C2—H2⋯O2	0.93	2.50	3.304 (6)	144
C15—H15⋯O2	0.93	2.54	3.148 (7)	123
C20—H20⋯Cg5i	0.93	2.88	3.596 (5)	134

Symmetry code: (i) .