Using ClCCCCCn1nnc2ccccc21, FC(F)(F)c1cccc(N2CCNCC2)c1 to produce FC(F)(F)c1cccc(N2CCN(CCCCCn3nnc4ccccc43)CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.