Using CCOC(=O)c1cn(C2CC2)c2c(COC(C)=O)c(Br)c(F)cc2c1=O to produce CCOC(=O)c1cn(C2CC2)c2c(CO)c(Br)c(F)cc2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.