You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (2R,3S)-3-amino-4-(3,5-difluorophenyl)-1-[[(1S)-1-[5-ethyl-2-(methylsulfonylmethyl)phenyl]ethyl]amino]butan-2-ol is given. What is its corresponding molecular formula?
user
C22H30F2N2O3S
assistant