Using [N-]=[N+]=NC1(CO)c2cc(Br)ccc2Oc2c1cc(Cl)nc2F to produce NC1(CO)c2cc(Br)ccc2Oc2c1cc(Cl)nc2F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.