You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 6-[2,5-difluoro-3-[3-(sulfinatoamino)propyl]benzoyl]-3-(2-hydroxyethoxy)quinoline by IUPAC nomenclature, provide its molecular formula.
user
C21H19F2N2O5S-
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