You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-(1,3-benzodioxol-5-yl)-N-[2-[(6-pyrazol-1-ylpyridazin-3-yl)amino]ethyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
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C18H18N6O3
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