You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-[(3S)-1-benzylpyrrolidin-3-yl]-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine by IUPAC nomenclature, provide its molecular formula.
user
C19H19F3N4
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