You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(1S)-6-fluoro-1'-(7-tricyclo[4.2.0.01,3]oct-4-enylmethyl)spiro[1,2-dihydroindene-3,3'-pyrrolidine]-1-yl]acetamide by IUPAC nomenclature, provide its molecular formula.
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C23H27FN2O
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