Using FC(F)(F)C1(c2cc(Cl)cc(Cl)c2)C=CN(Cc2ccccc2)C1 to produce FC(F)(F)C1(c2cc(Cl)cc(Cl)c2)CCN(Cc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.