Using CSc1nc(N)cc(N)n1, CC(C)(C)c1ccc(C(=O)Cl)cc1 to produce CSc1nc(N)cc(NC(=O)c2ccc(C(C)(C)C)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.