Using COC(=O)C(Nc1ccc(C(=N)NO)cc1)c1cc(Cl)cc(Cl)c1OCC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)COc1c(Cl)cc(Cl)cc1C(Nc1ccc(C(=N)NO)cc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.