You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
hexasodium;8-[[4-fluoro-3-[[3-[[3-[[2-fluoro-5-[(4,6,8-trisulfonatonaphthalen-1-yl)carbamoyl]phenyl]carbamoyl]phenyl]carbamoylamino]benzoyl]amino]benzoyl]amino]naphthalene-1,3,5-trisulfonate is the IUPAC name of a molecule. Please give its molecular formula.
user
C49H28F2N6Na6O23S6
assistant