You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-chloro-1-pyridin-3-ylpyrazol-4-yl)-N-ethyl-2-(2,2,2-trifluoroethylsulfanyl)propanamide is the IUPAC name of a molecule. Please give its molecular formula.
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C15H16ClF3N4OS
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