You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-ethyl-4-[2-[5-[(1R,2S)-2-(furan-2-yl)cyclopropyl]-1,2,4-oxadiazol-3-yl]ethyl]piperazine-2,3-dione into its molecular formula.
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C17H20N4O4
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