Using CCOC(=O)c1c(C)nc2c(NCc3c(C)cc(F)cc3C)cc(Br)cn12 to produce Cc1cc(F)cc(C)c1CNc1cc(Br)cn2c(CO)c(C)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.