You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 5-[3-(4-ethylphenyl)-1,2,4-oxadiazol-5-yl]-3-(4-fluoro-3-methylphenyl)-4-methyl-6-phenyl-1,6-dihydropyrimidine-2-thione by IUPAC nomenclature, provide its molecular formula.
user
C28H25FN4OS
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