You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(1-tert-butylpyrazol-4-yl)-3-[4-[2-(1-ethylpyrazol-4-yl)pyridin-4-yl]oxy-2-fluorophenyl]urea is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H26FN7O2
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