You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule ethyl 2-[2-[2-(4-methylsulfanylphenyl)acetyl]imino-6-sulfamoyl-1,3-benzothiazol-3-yl]acetate into molecular formula.
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C20H21N3O5S3
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