Using COC(=O)c1ccc(N)cc1NC(C)=O, CN(CC=O)C(=O)OC(C)(C)C to produce COC(=O)c1ccc(NCCN(C)C(=O)OC(C)(C)C)cc1NC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.