Using COC(=O)c1cccc2nc(Nc3c(C)cc(Br)cc3OC)n(C)c12 to produce COc1cc(Br)cc(C)c1Nc1nc2cccc(C(=O)O)c2n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.