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Provide the molecular formula for the IUPAC named substance 3'-[2-[1-(3,5-dimethylphenyl)-2,5-dimethylpyrrol-3-yl]-2-oxoethyl]spiro[1,2-dihydroindene-3,5'-imidazolidine]-2',4'-dione .
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C27H27N3O3
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