You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3,4-dihydro-1H-isoquinolin-2-yl-[(5R,7R)-5-(furan-2-yl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H19F3N4O2
assistant