Using Br[Mg]c1ccccc1, CC(C)c1c(C=O)c(OCc2ccccc2)nn1C(C)C to produce CC(C)c1c(C(O)c2ccccc2)c(OCc2ccccc2)nn1C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.