Using C1N2CN3CN1CN(C2)C3, CN(C(=O)CBr)c1ccc(Cl)cc1C(=O)c1ccccc1 to produce CN1C(=O)CN=C(c2ccccc2)c2cc(Cl)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.