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 2-[1-(2-bicyclo[2.2.1]heptanyl)-2-(oxolan-2-yl)ethoxy]carbonyl-2-ethylbutanoic acid is given. What is its corresponding molecular formula?
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C20H32O5
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