Using O=C(Cc1ccnc(F)c1)c1ccc(Br)cc1, CC(C)(C)ON=O to produce O=C(C(=NO)c1ccnc(F)c1)c1ccc(Br)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.