Using CCO, O=C1OC2(CC(c3ccc(Cl)cc3Cl)=NO2)c2ccccc21 to produce CCOC(=O)c1ccccc1-c1cc(-c2ccc(Cl)cc2Cl)no1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.