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-[3-(azepan-1-ylsulfonyl)phenyl]-2-(4,6-dimethylpyrimidin-2-yl)sulfanylacetamide is given. What is its corresponding molecular formula?
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C20H26N4O3S2
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