You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 3-bromo-N-[[[2-(2-bromo-4-methylphenoxy)acetyl]amino]carbamothioyl]-4-(2-methylpropoxy)benzamide is given. What is its corresponding molecular formula?
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C21H23Br2N3O4S
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