Using CCOC(=O)c1ccc(Br)c(CN(CC)C(=O)OCc2ccccc2)c1 to produce CCN(Cc1cc(C(=O)O)ccc1Br)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.