Using O=C([O-])[O-], COC(=O)c1nc(Br)c2c(Oc3ccccc3)cccc2c1O to produce COC(=O)c1nc(Br)c2c(Oc3ccccc3)cccc2c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.