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 2-[3-(2-butylsulfanyl-7-oxopyrido[2,3-d]pyrimidin-8-yl)propyl]isoindole-1,3-dione using the IUPAC nomenclature.
user
C22H22N4O3S
assistant