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What is the molecular formula of the compound with this IUPAC name 5-[(1R,2R,3R,5S,7S,9R,10S)-11-(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)-8-pentacyclo[5.4.0.02,6.03,10.05,9]undecanylidene]-2,2-dimethyl-1,3-dioxane-4,6-dione ?
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C23H22O8
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