You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(4-chlorophenyl)methyl]-N'-[3-(dimethylamino)propyl]-N-ethyl-3-oxopiperazine-1-carboximidamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H31ClIN5O
assistant