Using CC(C)c1ccc(N2C(=O)N(Cc3ccncc3)C(C)(C)C2=O)cc1N, O=C(Cl)CCl to produce CC(C)c1ccc(N2C(=O)N(Cc3ccncc3)C(C)(C)C2=O)cc1NC(=O)CCl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.