5,8,11‐Trioxa‐2,14‐di­thia­bi­cyclo­[13.4.1]­icosa‐1(19),15,17‐trien‐20‐one

The title compound, C₁₅H₂₀O₄S₂, crystallizes in a chiral space group although it contains mirror symmetry. The tropone ring is inclined at an angle of 50.3 (1)° to the crown ether ring. The planarity of the tropone ring system itself is diminished by as much as 20.8 (4)°.