You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-(2-fluorophenyl)-3-[(2R)-2-(4-methoxyphenyl)-2-pyrrolidin-1-ylethyl]urea is given. What is its corresponding molecular formula?
user
C20H24FN3O2
assistant