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 7-(2-ethoxyethyl)-3-methyl-8-[4-[(3-methylphenyl)methyl]piperazin-1-yl]purine-2,6-dione .
user
C22H30N6O3
assistant