You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[1-(4,4-difluorocyclohexyl)-3-(3H-imidazo[4,5-c]pyridin-2-ylmethyl)piperidin-4-yl]acetic acid .
user
C20H26F2N4O2
assistant