Using O=C(Br)CBr, COc1cc(N)c(Cl)cc1Cn1nc(-c2ccc(C(F)(F)F)cc2)oc1=O to produce COc1cc(NC(=O)CBr)c(Cl)cc1Cn1nc(-c2ccc(C(F)(F)F)cc2)oc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.