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 4-[2-(4-methylpiperidin-1-yl)-2-oxoethyl]sulfanyl-5,6,7,8-tetrahydro-1H-quinazolin-2-one .
user
C16H23N3O2S
assistant