Table 2. π–π interactions (Å,°).

CgI	CgJ	Cg⋯Cg	Dihedral angle	Interplanar distance	Offset
A	Ciii	3.549 (1)	0.8	3.420 (1)	1.068 (1)
B	Aiii	3.583 (1)	0.1	3.454 (1)	0.953 (1)
B	Ciii	3.772 (1)	0.8	3.455 (1)	1.525 (1)

Symmetry code: (iii) . CgA, CgB and CgC are the centroids of the C9/O10/C11–C14, C1–C4/C12/C11 and C5–C8/C13/C14 rings, respectively. The dihedral angle is that between the planes of the rings CgI and CgJ. The interplanar distance is the perpendicular distance of CgI from ring J. The offset is the perpendicular distance of ring I from ring J.