In the title compound, C(35)H(28)O(6)·C(7)H(8), the dihedral angle between the mean planes through the naphthalene ring systems of the dibenzo[a,g]fluorene moiety is 22.44 (3)°. The aromatic ring system of the naphthalenone unit is approximately perpendicular to the mean plane of the five-membered ring, forming a dihedral angle of 87.51 (5)°. An intra-molecular C-H⋯O hydrogen bond is observed. In the crystal, pairs of C-H⋯π inter-actions link the mol-ecules, forming inversion dimers.