You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 6-[2-oxo-2-(4-phenylpiperazin-1-yl)ethyl]sulfanyl-1-phenyl-5H-pyrazolo[3,4-d]pyrimidin-4-one ?
user
C23H22N6O2S
assistant