You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-hydroxy-2-[[6-(trifluoromethyl)-1H-benzimidazol-2-yl]sulfanylmethyl]pyran-4-one by IUPAC nomenclature, provide its molecular formula.
user
C14H9F3N2O3S
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