You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-(2-fluorophenyl)-3-hydroxy-2-methyl-N-[3-methyl-1-(2-thiophen-2-ylethyl)piperidin-4-yl]propanamide into molecular formula.
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C22H29FN2O2S
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