You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-methyl-1-[2-methyl-2-[3-(trifluoromethyl)phenyl]propyl]-3-[(1,3,5-trimethylpyrazol-4-yl)methyl]guanidine into molecular formula.
user
C20H28F3N5
assistant