You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N'-[2-[3-chloro-2-oxo-5-(trifluoromethyl)pyridin-1-yl]acetyl]-5-ethyl-4-methylthiophene-2-carbohydrazide into its molecular formula.
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C16H15ClF3N3O3S
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