You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[4-(4-fluorobenzoyl)-1-thia-4,8-diazaspiro[4.5]decan-8-yl]-2-phenylbutan-1-one into its molecular formula.
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C24H27FN2O2S
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