You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-[3-[4-(3-chloro-4-fluorophenyl)sulfonylpiperazin-1-yl]propyl]imidazolidine-2,4-dione into its molecular formula.
user
C16H20ClFN4O4S
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