Using CN(C)C(c1ccc(Cl)cc1)C1CCCCC1=O, Cl[Mg]Cc1ccccc1 to produce CN(C)C(c1ccc(Cl)cc1)C1CCCCC1(O)Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.