Using c1ccc(OCCCOc2ccccc2)cc1, O=C(Cl)c1ccccc1 to produce O=C(c1ccccc1)c1ccc(OCCCOc2ccc(C(=O)c3ccccc3)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.