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The title compound, C 45 H 34 O 4 , is the product of a tandem ‘pincer’ Diels–Alder reaction consisting of two consecutive [4 + 2] cyclo­additions between two 2-benzofuran units and ethyl propiolate. The mol­ecule comprises a fused hexa­cyclic system containing four five-membered rings, which are in the usual envelope conformation, and two six-membered rings. In addition, four phenyl rings are attached to the hexa­cyclic system. The packing is stabilized by C—H⋯π inter­actions.

acta crystallographica. section e

Ethyl 1,3,10,12-tetraphenyl-19,20-dioxahexacyclo[10.6.1.13,10.02,11.04,9.013,18]icosa-4(9),5,7,13(18),14,16-hexaene-2-carboxylate