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In the title compound, C 27 H 30 O 8 , the cyclo­hexane ring is in a chair conformation, while the five-membered ring adopts an envelope conformation. The 1,3-dioxane ring is oriented with respect to the benzene rings at dihedral angles of 53.38 (3) and 55.31 (3)°, while the dihedral angle between the benzene rings is 71.56 (3)°. In the crystal structure, inter­molecular C—H⋯O inter­actions link the mol­ecules into chains.

7,14-Bis(4-methoxyphenyl)-11,11-dimethyl-1,4,10,12-tetraoxadispiro[4.2.5.2]pentadecane-9,13-dione