You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(2,3-dihydro-1,4-benzodioxin-6-yl)-N-(2-methylsulfanylphenyl)-5-oxopyrrolidine-3-carboxamide into its molecular formula.
user
C20H20N2O4S
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