You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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ethyl 6-[(3,4-difluorophenyl)sulfanylmethyl]-4-(furan-2-yl)-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H16F2N2O4S
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