You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S)-4-(benzenesulfonyl)-2-methyl-N-(3-methylbutyl)-1-(4-methylphenyl)-6-oxopiperazine-2-carboxamide into molecular formula.
user
C24H31N3O4S
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