You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 4-(3,4-dichlorophenyl)sulfinyl-2-[2-(trifluoromethyl)pyrimidin-5-yl]sulfanylbenzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H13Cl2F3N2O3S2
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