You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-(2-naphtho[2,1-b][1]benzofuran-9-ylphenyl)-10-phenyl-[1]benzofuro[3,2-b]indole;9-(2-naphtho[2,3-b][1]benzofuran-3-ylphenyl)-10-phenyl-[1]benzofuro[3,2-b]indole;10-phenyl-8-[2-(6-phenyldibenzofuran-1-yl)phenyl]-[1]benzofuro[3,2-b]indole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C128H77N3O6
assistant