You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-cyano-4,5-dimethylfuran-2-yl)-4-[(4,6-dimethylpyrimidin-2-yl)amino]butanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H21N5O2
assistant