Using O=C1CCC(N2C(=O)c3cccc(O)c3C2=O)C(=O)N1, OCc1ccc(Cl)c(Cl)c1 to produce O=C1CCC(N2C(=O)c3cccc(OCc4ccc(Cl)c(Cl)c4)c3C2=O)C(=O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.