You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 4-(5-chloropyridin-2-yl)-4-[(5-methylpyridin-2-yl)methyl]piperazin-4-ium-1-carboxylic acid into molecular formula.
user
C17H20ClN4O2+
assistant