You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[1-[2-(3-amino-5-cyanoanilino)-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl]piperidin-3-yl]acetamide .
user
C21H25N7O
assistant