You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as N-[6-[(3S)-3-[3-(3,5-dichloroanilino)-2-oxopropyl]piperidin-1-yl]pyrimidin-4-yl]acetamide using the IUPAC nomenclature.
user
C20H23Cl2N5O2
assistant