You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (5-chloro-1H-imidazo[4,5-b]pyridin-2-yl)methyl (2S)-3-methyl-2-piperidin-1-ylbutanoate into molecular formula.
user
C17H23ClN4O2
assistant