You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R)-2-(5-methyl-1,3,4-oxadiazol-2-yl)-N-spiro[1,3-benzodioxole-2,1'-cyclohexane]-5-ylpyrrolidine-1-carboxamide .
user
C20H24N4O4
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