You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [3-(dimethylamino)phenyl]-[4-[(3-thiophen-2-yl-1,2,4-oxadiazol-5-yl)methyl]piperazin-1-yl]methanone into its molecular formula.
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C20H23N5O2S
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