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 6,7-dihydroxy-2-[(1R)-1,2,3,4-tetrahydronaphthalen-1-yl]-3H-isoindol-1-one is given. What is its corresponding molecular formula?
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C18H17NO3
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