Using COC(=O)Cc1cccc(Oc2ccc(Br)cc2CN2C(=O)OC[C@@H]2c2ccccc2)c1 to produce O=C(O)Cc1cccc(Oc2ccc(Br)cc2CN2C(=O)OC[C@@H]2c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.