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-(1,3-benzodioxol-5-ylmethyl)piperazin-1-yl]-(2-bromo-4-fluorophenyl)methanone is given. What is its corresponding molecular formula?
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C19H18BrFN2O3
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