Using CC(C)CC(C(=O)O)N1C(=O)c2ccccc2C1=O, Nc1nccs1 to produce CC(C)CC(C(=O)Nc1nccs1)N1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.