Using BrCCCCBr, Nc1ccc(OC23CC4CC(CC(C4)C2)C3)cc1F to produce Fc1cc(OC23CC4CC(CC(C4)C2)C3)ccc1N1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.