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Under IUPAC nomenclature, a molecule named tert-butyl 8-methyl-5-[(2-methylpyridin-4-yl)methylcarbamoyl]-3,4,4a,9b-tetrahydro-1H-pyrido[4,3-b]indole-2-carboxylate is given. What is its corresponding molecular formula?
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C25H32N4O3
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