You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 3-methyl-4-[5-methyl-1-(1-methylpyrazol-4-yl)indazol-6-yl]-3,6-dihydro-2H-pyridine-1-carboxylic acid into its molecular formula.
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C19H21N5O2
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