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 (2S)-7-chloro-3-propyl-2-(2-pyrrolidin-1-ylpyrimidin-5-yl)-1,2-dihydroquinazolin-4-one .
user
C19H22ClN5O
assistant