Using COC(=O)c1nc2n(c1C=O)C1CC(C1)c1cc(F)c(Br)cc1-2 to produce O=Cc1c(C(=O)O)nc2n1C1CC(C1)c1cc(F)c(Br)cc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.