You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(5-ethylthiophen-2-yl)-3-methyl-1-propan-2-yl-4-(trifluoromethyl)pyrazolo[3,4-b]pyridine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H18F3N3S
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