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-[(2S,3R)-3-(dimethylamino)-2-(pyridin-3-ylmethyl)pyrrolidin-1-yl]-2-(3-fluorophenyl)ethanone .
user
C20H24FN3O
assistant