You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(3-amino-2-methylbutanoyl)-N-(5-chloropyridin-2-yl)piperidine-4-carboxamide;dihydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H25Cl3N4O2
assistant