You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-oxo-2-[3-[[4-[3-[(2-triphenylphosphaniumylacetyl)amino]propylcarbamoyl]benzoyl]amino]propylamino]ethyl]-triphenylphosphanium is the IUPAC name of a molecule. Please give its molecular formula.
user
C54H54N4O4P2+2
assistant