You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[2-[[3-(2,4-dimethoxyphenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl]oxy]ethyl]naphthalene-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C26H23N5O4
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