Using BrCc1ccccc1, O=C(O)c1ccc2[nH]c(=O)c(=O)n(O)c2c1 to produce O=C(O)c1ccc2[nH]c(=O)c(=O)n(OCc3ccccc3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.