You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[5-(2-amino-4-methyl-5,6-dihydro-1,3-thiazin-4-yl)-2-fluorophenyl]-5-(4-chlorophenyl)-2-methylfuran-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C23H21ClFN3O2S
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