Using COC(=O)C(=O)N(Cc1ccc(C(C)(C)C)cc1)c1ccc(-c2ccc(OC)cc2)cc1 to produce COc1ccc(-c2ccc(N(Cc3ccc(C(C)(C)C)cc3)C(=O)C(=O)O)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.