You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [1-(4-fluorophenyl)pyrazol-3-yl]-[(2R)-2-[(2R)-1-methylpyrrolidin-2-yl]pyrrolidin-1-yl]methanone by IUPAC nomenclature, provide its molecular formula.
user
C19H23FN4O
assistant