You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[6-chloro-4-(3-fluoro-4-methoxyphenyl)-2-methylquinolin-3-yl]-2-propan-2-yloxyacetic acid by IUPAC nomenclature, provide its molecular formula.
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C22H21ClFNO4
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