Using Clc1cccc(Cc2nc(Cl)c3c(n2)CCN(Cc2ccccc2)CC3)c1 to produce Clc1cccc(Cc2ncc3c(n2)CCN(Cc2ccccc2)CC3)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.