You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[5-(2-amino-4-methyl-5,6-dihydro-1,3-thiazin-4-yl)-2-fluorophenyl]-3-bromobenzamide is given. What is its corresponding molecular formula?
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C18H17BrFN3OS
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