You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[(2-chlorophenyl)methylsulfanyl]-2-methyl-1-spiro[1H-2-benzofuran-3,3'-pyrrolidine]-1'-ylpropan-1-one into its molecular formula.
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C22H24ClNO2S
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