You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[(2S)-butan-2-yl]-2-[[4-(3-methoxyphenyl)-5-pyridin-2-yl-1,2,4-triazol-3-yl]sulfanyl]acetamide is given. What is its corresponding molecular formula?
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C20H23N5O2S
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