Using COc1cc(C2CC(N3CCOCC3)Oc3cc(N(C)C)ccc32)cc(Br)c1OC, O=C([O-])O to produce COc1cc(C2CC(O)Oc3cc(N(C)C)ccc32)cc(Br)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.