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 6-amino-2-[2-oxo-2-(4-phenylpiperazin-1-yl)ethyl]sulfanyl-1-phenylpyrimidin-4-one using the IUPAC nomenclature.
user
C22H23N5O2S
assistant