Using COc1ccccc1[Mg]Br, CC(=O)OCC1CC(=O)C2CN(Cc3ccccc3)CC2C1 to produce COc1ccccc1C1(O)CC(CO)CC2CN(Cc3ccccc3)CC21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.