Using CCCCCC(I)I, O=C1C(CCC(O)c2ccc(F)cc2)C(c2ccc(O)cc2)N1c1ccc(F)cc1 to produce O=C1C(CCC(O)c2ccc(F)cc2)C(c2ccc(OCCCCCCI)cc2)N1c1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.