You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-fluoro-4-[(3R)-3-[1-(pyridin-3-ylmethyl)imidazol-2-yl]piperidin-1-yl]pyridine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H20FN5
assistant