You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
dibutyl (2S)-2-[[2-ethoxy-4-[5-[[[(2R)-2-[(1R)-1-[formyl(2-phenylpropan-2-ylcarbamoyloxy)amino]propyl]heptanoyl]amino]methylcarbamoyl]furan-2-yl]benzoyl]amino]butanedioate is the IUPAC name of a molecule. Please give its molecular formula.
user
C48H67N5O12
assistant