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 3-[(3aS,7aS)-1,3-dioxo-3a,4,7,7a-tetrahydroisoindol-2-yl]-N-phenylpropanamide is given. What is its corresponding molecular formula?
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C17H18N2O3
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