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-[2-(2,2-dimethylhydrazinyl)-2-oxoethyl]-2,4,6-trimethyl-N-(2-phenylethyl)benzenesulfonamide is given. What is its corresponding molecular formula?
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C21H29N3O3S
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