Using Cc1c(Br)c(=O)c(Br)c(-c2ccccc2)n1C, Cc1cc(=O)c(C(=O)O)c(-c2ccccc2)n1C to produce Cc1c(Br)c(=O)c(C(=O)O)c(-c2ccccc2)n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.