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 dimethyl (E)-2-[(3-oxo-2,4-dihydro-1H-isoquinolin-7-yl)amino]but-2-enedioate is given. What is its corresponding molecular formula?
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C15H16N2O5
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