You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[5-(2,2-difluoro-6-methyl-1,3-benzodioxol-5-yl)pyrazin-2-yl]-2-methyl-4,5,6,7-tetrahydroindazole-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C21H19F2N5O3
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