You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (2S)-2-[[5-(2-methylfuran-3-yl)-1,3,4-oxadiazol-2-yl]sulfanyl]-2-phenyl-1-piperidin-1-ylethanone into molecular formula.
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C20H21N3O3S
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