Using O=C(O)c1ccccc1CCC(O)c1cccc(/C=C/c2ccc3ccc(Cl)cc3n2)c1 to produce O=C1OC(c2cccc(/C=C/c3ccc4ccc(Cl)cc4n3)c2)CCc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.