You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[(E)-3-(3,5-dimethylphenyl)-4,4,4-trifluorobut-1-enyl]-3-methyl-N-[(6-methylpyridin-3-yl)methyl]pyridine-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H26F3N3O
assistant