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Under IUPAC nomenclature, a molecule named [1-[1-ethoxycarbonyl-2-(trifluoromethylsulfonyloxy)indol-3-yl]-2-methoxy-2-oxoethylidene]-dimethylazanium;trifluoromethanesulfonate is given. What is its corresponding molecular formula?
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C18H18F6N2O10S2
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