You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R,7S)-N-(3-cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-5-(furan-2-yl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H18F3N5O2S
assistant