You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (2S)-2-[[(2S)-3-(4-aminophenyl)-2-[(4-bromophenyl)methoxycarbonylamino]propanoyl]amino]-3-(4-fluorophenyl)propanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H29BrFN3O5
assistant