You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[6-fluoro-1-[(3R,4R)-1-(4-hydroxyphenyl)sulfonyl-4-methylpyrrolidin-3-yl]pyrazolo[4,3-c]pyridin-3-yl]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H19FN4O5S
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