Using Cc1ccc2cccc(OCc3c(Cl)ccc(C(=O)N4CCN(C(=O)OC(C)(C)C)CC4)c3Cl)c2n1 to produce Cc1ccc2cccc(OCc3c(Cl)ccc(C(=O)N4CCNCC4)c3Cl)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.