You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-ethyl-6-(4-fluorophenoxy)-3-[(2R)-1-methoxy-3-phenylpropan-2-yl]quinazolin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H25FN2O3
assistant