You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(5-amino-4-oxopentyl)-4-(propylamino)-2-(2-pyridin-4-ylethylamino)pyrimidine-5-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H29N7O2
assistant