You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-[(3S,4S)-3-[(cyclopropylamino)methyl]-4-fluoropyrrolidin-1-yl]-1-(2,4-difluorophenyl)-6-fluoro-4-oxoquinoline-3-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H21F4N3O3
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