You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (5R)-5-(2,4-dichlorophenyl)-5-methyl-3-[(4-methylsulfanylphenyl)methyl]imidazolidine-2,4-dione into molecular formula.
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C18H16Cl2N2O2S
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