Using Cc1c(Br)ccc2c1NCC2, COc1ccc2c(Cl)ncnc2c1 to produce COc1ccc2c(N3CCc4ccc(Br)c(C)c43)ncnc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.