Using Cc1csc(CBr)n1, COC(=O)c1cccc(C(=O)NN(C)C)c1 to produce COC(=O)c1cccc(C(=O)N(Cc2nc(C)cs2)N(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.