You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 4-[3-(2,4-dimethylphenoxy)-2-oxopyrrolidin-1-yl]-N-(1,3-thiazol-2-yl)benzenesulfonamide;molecular hydrogen .
user
C21H23N3O4S2
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