You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-amino-4-(2-pyridin-2-ylethylamino)phenyl]-4-methyl-2-phenyl-5-(trifluoromethyl)benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H25F3N4O
assistant