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-(3,4-dimethylphenyl)-2-[(2R)-1-[2-(4-ethylpiperazin-1-yl)acetyl]-3-oxopiperazin-2-yl]acetamide .
user
C22H33N5O3
assistant