You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-benzyl-N-[(2S)-1-hydroxybutan-2-yl]-1,3-dimethylpyrazolo[3,4-b]pyridine-5-sulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
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C19H24N4O3S
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