Using ClI, FC(F)(F)c1cccc(-c2cc(C(F)(F)F)n3nccc3n2)c1 to produce FC(F)(F)c1cccc(-c2cc(C(F)(F)F)n3ncc(I)c3n2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.