Using COC(=O)CCN, Cc1cc(OC(CC(C)(C)C)c2ccc(C(=O)O)cc2)cnc1Cl to produce COC(=O)CCNC(=O)c1ccc(C(CC(C)(C)C)Oc2cnc(Cl)c(C)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.