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 (4R)-4-[(2S)-2-(2,4-dimethoxyphenyl)pyrrolidine-1-carbonyl]-1-[(4-methylphenyl)methyl]pyrrolidin-2-one into molecular formula.
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C25H30N2O4
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