Using Clc1cccc(-n2cnnc2NCc2cccnc2N2CCCNCC2)c1Cl, NC(=O)CBr to produce NC(=O)CN1CCCN(c2ncccc2CNc2nncn2-c2cccc(Cl)c2Cl)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.