Using COC=C1C(=O)NC(=O)c2ccc(Br)cc21, NCc1ccc(O)c(O)c1O to produce O=C1NC(=O)c2ccc(Br)cc2C1=CNCc1ccc(O)c(O)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.