You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 4-[[5-methyl-3-[4-(trifluoromethylsulfonyl)phenyl]imidazolidin-1-yl]methyl]-N-propan-2-ylpyridin-2-amine ?
user
C20H25F3N4O2S
assistant