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 N-[[(6R)-3-cyano-6-methyl-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]carbamothioyl]-4-propan-2-ylbenzamide .
user
C21H23N3OS2
assistant