You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-[2-cyano-1-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)pyrazol-1-yl]ethyl]thiophene-3-carbonitrile into its molecular formula.
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C17H11N7S
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