You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S)-1-[2-(4-methylphenyl)acetyl]-3-[(2-pyrimidin-5-ylphenyl)methyl]piperidine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H28N4O2
assistant