You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-[[6-chloro-2-fluoro-3-[propyl(sulfinato)amino]benzoyl]amino]-2-(cyclopropylamino)pyridine by IUPAC nomenclature, provide its molecular formula.
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C18H19ClFN4O3S-
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