Using CCOC(=O)CCC(=O)[O-], CCc1[nH]c(C(=O)Nc2ccc3c(c2)OCCN3C(=O)OC(C)(C)C)nc1Cl to produce CCOC(=O)CCC(=O)N1CCOc2cc(NC(=O)c3nc(Cl)c(CC)[nH]3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.