You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 6-chloro-2-[6-chloro-4-(2-ethoxyethoxy)-1-hydroxynaphthalen-2-yl]-4-(2-ethoxyethoxy)naphthalen-1-ol by IUPAC nomenclature, provide its molecular formula.
user
C28H28Cl2O6
assistant