You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 4-(2,1,3-benzoxadiazol-4-ylmethyl)-1-(3,5-dimethylphenyl)piperazin-2-one is given. What is its corresponding molecular formula?
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C19H20N4O2
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