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