You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-ethyl-3-ethylsulfonyl-N-[5-(trifluoromethylsulfanyl)pyridin-2-yl]pyridine-4-carboxamide into its molecular formula.
user
C16H16F3N3O3S2
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