Using COc1cc(OC)c(C2=CCN(C)CC2Br)c(OC)c1, COC(C)(C)C to produce COc1cc(OC)c(C2=CCN(C)CC2O)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.