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 N-[(4,6-dimethyl-2-oxo-1H-pyridin-3-yl)methyl]-1-propan-2-ylindole-4-carboxamide is given. What is its corresponding molecular formula?
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C20H23N3O2
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