You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (E)-1-[2-(1,3-dioxolan-2-yl)piperidin-1-yl]-3-[5-(4-fluorophenyl)thiophen-2-yl]prop-2-en-1-one into molecular formula.
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C21H22FNO3S
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