You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[4-(5,7-dihydroxy-4-oxochromen-2-yl)phenoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]phenyl]-5,7-dihydroxychromen-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C56H70O22
assistant