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 (E)-but-2-enedioic acid;(3S)-N-[(2,3-dichlorophenyl)methyl]-N-propan-2-ylpyrrolidin-3-amine into molecular formula.
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C18H24Cl2N2O4
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