You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-(8-fluoro-5-oxa-2-azaspiro[3.5]nonan-2-yl)-2-[[5-methyl-3-(6-methylpyridin-3-yl)-1,2-oxazol-4-yl]methyl]pyridazin-3-one by IUPAC nomenclature, provide its molecular formula.
user
C22H24FN5O3
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