Using O=C(CBr)C(F)(F)F, CC(C)(C)OC(=O)Nc1cc(C(N)=S)c(Br)cn1 to produce CC(C)(C)OC(=O)Nc1cc(C2=NC(O)(C(F)(F)F)CS2)c(Br)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.