You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 4,4-dimethyl-N-[4-(trifluoromethyl)phenyl]-3,3a-dihydrothiochromeno[4,3-c]pyrazole-2-carboxamide .
user
C20H18F3N3OS
assistant