You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3S)-3-amino-4-(3,5-difluorophenyl)-1-[(3-ethylphenyl)methylamino]butan-2-yl] 4-(2-oxo-1,3-oxazolidin-3-yl)benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H31F2N3O4
assistant