You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 7-(2-ethoxyethyl)-3-methyl-8-[4-(2-phenylethyl)piperazin-1-yl]-4,5-dihydropurine-2,6-dione ?
user
C22H32N6O3
assistant