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For the molecule named ethyl 2-[[6-[[bis(2-ethoxy-2-oxoethyl)amino]methyl]-4-(3-hydroxy-4-phenylbutyl)pyridin-2-yl]methyl-(2-ethoxy-2-oxoethyl)amino]acetate by IUPAC nomenclature, provide its molecular formula.
user
C33H47N3O9
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