You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[3,5-bis[2-[(2-diphenylphosphorylacetyl)amino]ethyl]-2,4,6-trimethylphenyl]ethyl]-2-diphenylphosphorylacetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C57H60N3O6P3
assistant