You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 3-[[(3R)-1-(3-fluoro-4-methylphenyl)sulfonylpiperidin-3-yl]methyl]-2-methylimidazo[4,5-b]pyridine ?
user
C20H23FN4O2S
assistant