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 2-(2,4-dichlorophenyl)ethyl-[(3S)-1-(4-methoxyphenyl)-2,5-dioxopyrrolidin-3-yl]azanium is given. What is its corresponding molecular formula?
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C19H19Cl2N2O3+
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