You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-(2-phenoxyethoxy)-N-[2-(N-[4-(2-phenoxyethoxy)benzoyl]anilino)ethyl]-N-phenylbenzamide by IUPAC nomenclature, provide its molecular formula.
user
C44H40N2O6
assistant