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 1-(4-chlorophenyl)-N-[3-(3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)phenyl]-5-oxopyrrolidine-3-carboxamide is given. What is its corresponding molecular formula?
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C23H19ClN6O2
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