Using Cc1cc(C)cc(C(=O)Cl)c1, COc1cccc(C(=O)NNC(C)(C)C)c1C to produce COc1cccc(C(=O)NN(C(=O)c2cc(C)cc(C)c2)C(C)(C)C)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.