You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-(4-bromophenyl)pyrimidin-2-yl]sulfanyl-N-(2,3,5,6-tetrafluorophenyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H10BrF4N3OS
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