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-[2-[6-[2-(hydroxymethoxy)phenyl]-7-(1,3,4-thiadiazol-2-yldiazenyl)-5H-pyrazolo[1,5-b][1,2,4]triazol-2-yl]propyl]butanamide into molecular formula.
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C20H23N9O3S
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