Using O=S1(=O)C(c2ccccc2I)=C(O)c2scnc2N1CC(F)F, C#CCBr to produce C#CCOC1=C(c2ccccc2I)S(=O)(=O)N(CC(F)F)c2ncsc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.