Using CC(C)(C)OC(=O)N1CCC(C(=O)Nc2ccccc2Oc2ccc(Cl)cc2)CC1 to produce O=C(Nc1ccccc1Oc1ccc(Cl)cc1)C1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.