You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(1,3-benzodioxol-5-yl)-5-[5-(2,4-dimethylphenyl)pyrazolidin-3-yl]-1,2,4-oxadiazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H20N4O3
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