You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1,2,3,4,5-pentabromo-6-[1-chloro-3-[3-chloro-3-(2,3,4,5,6-pentabromophenyl)prop-2-enoxy]prop-1-enyl]benzene .
user
C18H6Br10Cl2O
assistant