Using Clc1cccc(CBr)c1Cl, CC1CN(c2nc3[nH]cnc(=O)c3s2)CCO1 to produce CC1CN(c2nc3c(s2)c(=O)ncn3Cc2cccc(Cl)c2Cl)CCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.