Using C1CCOC1, CC(C(=O)O)c1ccc2c(c1)C=Cc1ccccc1C2Br to produce CC(C(=O)O)c1ccc2c(c1)C=Cc1ccccc1C2O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.