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'S,4'S,5R,10'R,14'S)-14'-ethylspiro[2H-furan-5,15'-pentacyclo[9.7.0.02,4.05,10.014,18]octadec-5-ene]-7'-one is given. What is its corresponding molecular formula?
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C23H30O2
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