You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: Decomposes above 500 °c to give hexachlorobenzene; hexachloropentadiene was found in small amounts in the thermal residue; the products identified from vapor phase were carbon monoxide, carbon dioxide, hydrogen chloride, chlorine, carbon tetrachloride, & phosgene. The molecule has Odorless.
user
ClC1(Cl)C2(Cl)C3(Cl)C4(Cl)C(Cl)(Cl)C5(Cl)C3(Cl)C1(Cl)C5(Cl)C24Cl
assistant