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 N-[4-methyl-2-(1,2,3,4-tetrahydronaphthalen-1-yl)pyrazol-3-yl]-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole-3-carboxamide into molecular formula.
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C21H23N5O
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