Table 2. π-Ring hydrogen-bond geometry (Å, °) for (I).

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C33—H33A⋯Cg5vi	0.95	2.90	3.545 (8)	127

Symmetry code: (vi) x + 1, y, z. Cg5 is the centroid of the C15–C21 ring.