Using COC(=O)CC(c1ccccc1)C(C(=O)N(C(C)C)C(C)C)c1cccnc1 to produce CC(C)N(C(=O)C(c1cccnc1)C(CC(=O)O)c1ccccc1)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.