Using COC(=O)c1cc(Br)ccc1NC(=O)Cc1cccc(C(F)(F)F)c1 to produce O=c1[nH]c2ccc(Br)cc2c(O)c1-c1cccc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.