You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-(9,10-diphenylanthracen-2-yl)naphtho[2,1-b][1]benzofuran;5-[3-[10-(3-naphtho[1,2-b][1]benzofuran-5-ylphenyl)anthracen-9-yl]phenyl]naphtho[1,2-b][1]benzofuran;9-[3-[10-(3-naphtho[2,1-b][1]benzofuran-9-ylphenyl)anthracen-9-yl]phenyl]naphtho[2,1-b][1]benzofuran;10-[3-[10-(3-naphtho[2,1-b][1]benzofuran-10-ylphenyl)anthracen-9-yl]phenyl]naphtho[2,1-b][1]benzofuran The above is the IUPAC name of a molecule. Write its molecular formula.
user
C216H128O7
assistant