You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[5-(2,4-difluorophenyl)sulfinylpentyl]-2-ethyl-7-methylimidazo[4,5-c]pyridin-4-amine .
user
C20H24F2N4OS
assistant