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For the molecule named ethyl 2-[[4-[(1S,2R,6S,7R)-3,5-dioxo-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]benzoyl]amino]-5,5-dimethyl-4,7-dihydrothieno[2,3-c]pyran-3-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C28H28N2O6S
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