You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-(4-amino-7-cyclopentylpyrrolo[2,3-d]pyrimidin-5-yl)phenyl]-1-(3-methylbutyl)-2-oxopyridine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H32N6O2
assistant