Using CC1(C)OC(=O)C(=Cc2ccc(O)cc2)C(=O)O1, CC#C[Mg]Br to produce CC#CC(c1ccc(O)cc1)C1C(=O)OC(C)(C)OC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.