Using COC(=O)c1cc(Cl)cc(OC2CCN(C(=O)OC(C)(C)C)CC2)c1C to produce Cc1c(OC2CCN(C(=O)OC(C)(C)C)CC2)cc(Cl)cc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.