Using Cl[Mg]Cc1ccccc1, COc1ccc(NC(=O)CCCCC(=O)N(C)OC)cc1 to produce COc1ccc(NC(=O)CCCCC(=O)Cc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.