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Under IUPAC nomenclature, a molecule named tert-butyl (3aR,6aS)-2-[5-(1-ethoxyethenyl)pyridin-3-yl]-1,3,3a,4,6,6a-hexahydropyrrolo[3,4-c]pyrrole-5-carboxylate is given. What is its corresponding molecular formula?
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C20H29N3O3
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