You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule tert-butyl (1R,6R)-1-(2-methylpropyl)-3-oxo-6-propan-2-yl-1,3a,4,5,6,6a-hexahydrocyclopenta[c]furan-5-carboxylate into molecular formula.
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C19H32O4
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