You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2S)-N-cyclohexyl-2-[3-(4-methoxyphenyl)-1,2,4-oxadiazol-5-yl]pyrrolidine-1-carboxamide into its molecular formula.
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C20H26N4O3
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