You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Can you give the molecular formula of the molecule 6-(4-hydroxy-2,6-dimethylphenyl)-3-methyl-1-(oxan-2-yl)pyrazolo[3,4-b]pyridine-4-carboxylic acid ?
user
C21H23N3O4
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