You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 1-[5-(4-chlorophenyl)-3-(furan-2-yl)-3,4-dihydropyrazol-2-yl]-2,2-dimethylpropan-1-one into molecular formula.
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C18H19ClN2O2
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