Using COc1ccc(Oc2c(C)cc(-n3nc(C(=O)O)c(=O)[nH]c3=O)cc2C)cc1Br to produce Cc1cc(-n2nc(C(=O)O)c(=O)[nH]c2=O)cc(C)c1Oc1ccc(O)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.