You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named [3-[formyl-[2-[(2R)-2-methylpyrrolidin-1-yl]-2-oxoethyl]amino]-1-adamantyl] 2,2,2-trifluoroacetate is given. What is its corresponding molecular formula?
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C20H27F3N2O4
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