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Name the molecular formula for the molecule established as 5,7-dibromo-3-[1-[(1,4-dihydroxy-5,6,7,8-tetrahydronaphthalen-2-yl)methyl]inden-1-yl]-1,3-dihydroindol-2-one using the IUPAC nomenclature.
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C28H23Br2NO3
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