Using COC(=O)c1ccc(CN(Cc2ccccn2)C(=O)OC(C)(C)C)cc1 to produce CC(C)(C)OC(=O)N(Cc1ccc(C(=O)O)cc1)Cc1ccccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.