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 8-[(3-methyl-1-propan-2-ylpyrrolidin-3-yl)methoxy]-1,2,3,4-tetrahydroisoquinoline is given. What is its corresponding molecular formula?
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C18H28N2O
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