You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[[N-[2-(4-chlorophenyl)-2-(dimethylamino)ethyl]-N'-methylcarbamimidoyl]amino]piperidin-1-yl]-N-methylacetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H33ClN6O
assistant