You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-(2-methylbenzoyl)-N-(3-methylbutan-2-yl)-2-propan-2-yl-1,3-thiazolidine-4-carboxamide into molecular formula.
user
C20H30N2O2S
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