You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-cyclopropyl-2-hydroxyethyl)-3-[4-(3,4-difluorophenyl)butan-2-yl]-1-methylurea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H24F2N2O2
assistant