Using O=C([O-])O, Fc1cc(F)c(Nc2nc3ccc(Br)cc3c3c(Cl)nccc23)c(F)c1 to produce O=c1[nH]ccc2c(Nc3c(F)cc(F)cc3F)nc3ccc(Br)cc3c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.