You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[[3-bromo-4-[(2-chloro-4-fluorophenyl)methoxy]-5-methoxyphenyl]methylamino]-4-methoxybenzoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H20BrClFNO5
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