rac-12,14-Dicyclo-propyl-5,8,13,18,21-penta-oxapenta-cyclo-[13.8.0.0.0.0]tricosa-1(15),2(11),3,9(10),16,22(23)-hexa-ene.

The mol-ecule of the title compound, C(24)H(24)O(5), has crystallographic twofold symmetry, with the central O atom lying on the rotation axis. The dihedral angle between the best planes of the benzene rings fused to the oxepine fragment is 38.5 (1)°. The dioxine ring adopts a twist form with the ethyl-ene group C atoms deviating by 0.472 (5) and -0.248 (6) Šfrom the plane defined by the remaining ring atoms.

8-Hydr-oxy-8-phenyl-2,3,7,8-tetra-hydro-6H-1,4-dioxino[2,3-f]isoindol-6-one.

In the title compound, C(16)H(13)NO(4), the indole system is essentially planar, whereas the dioxane ring adopts a twist conformation. The mol-ecules are linked into chains by -O- H⋯O=C- hydrogen bonds and these chains are linked into rods by means of N-H⋯O hydrogen bonds. Exept for weak C-H⋯O inter-actions between the rods, no other inter-molecular contacts of inter-est are present.