Using O=Cc1c(Cl)ccc(OCC(F)(F)F)c1F, Brc1cnc2[nH]ccc2c1 to produce OC(c1c(Cl)ccc(OCC(F)(F)F)c1F)c1c[nH]c2ncc(Br)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.