You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-3-[4-[2-(2,4-dimethoxyphenyl)ethyl]piperidin-1-yl]-1-(4-propoxyphenyl)pyrrolidine-2,5-dione is the IUPAC name of a molecule. Please give its molecular formula.
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C28H36N2O5
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