You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(5-ethyl-1,3,4-thiadiazol-2-yl)-2-(trifluoromethyl)-3H-benzimidazole-5-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C13H10F3N5OS
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