You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-chloro-N-(2-fluoropyridin-4-yl)-6-methyl-7-(4-methylphenyl)sulfonylpyrrolo[2,3-d]pyrimidin-4-amine .
user
C19H15ClFN5O2S
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