Using COC(=O)[C@H]1CC=CC[C@@H]1C(=O)N1CCOC1=O, CO[Mg]OC to produce COC(=O)[C@H]1CC=CC[C@@H]1C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.