You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-hydroxy-2-methyl-2-[4-(3-methyl-4-pyridin-2-yloxyanilino)quinazolin-5-yl]oxybutanamide by IUPAC nomenclature, provide its molecular formula.
user
C25H25N5O4
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