You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-[4-(2-methoxyphenyl)piperazin-1-yl]propyl]-5-methylpyrimidine-2,4-dione;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H27ClN4O3
assistant