You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(3R)-1-[5-(4-fluorophenyl)-1H-pyrazol-3-yl]piperidin-3-yl]-5-methylthiophene-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H21FN4OS
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