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 1H-indazol-3-yl-[4-[[4-(trifluoromethoxy)phenyl]methyl]piperazin-1-yl]methanone is given. What is its corresponding molecular formula?
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C20H19F3N4O2
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