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 2-[5-(3,4-dimethylphenyl)-6-methyl-4-oxothieno[2,3-d]pyrimidin-3-yl]-N-[3-(trifluoromethyl)phenyl]butanamide .
user
C26H24F3N3O2S
assistant