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 (2R)-2-[(3,4-dichlorophenyl)methyl-[2-(4-methyl-N-methylsulfonylanilino)acetyl]amino]-N-ethyl-3-phenylpropanamide is given. What is its corresponding molecular formula?
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C28H31Cl2N3O4S
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