Using ClCc1cccc(Cl)c1, CCOC(=O)c1cc2ccc(O)cc2nc1C to produce CCOC(=O)c1cc2ccc(OCc3cccc(Cl)c3)cc2nc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.