You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-(1,1-difluoroethylsulfonyl)-3-[4-methyl-4-[3-(trifluoromethyl)phenyl]sulfonyloxan-2-yl]-2H-pyrrole into its molecular formula.
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C19H20F5NO5S2
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