Using CON(C)C(=O)/C(=C/C1CCOCC1)c1ccc(S(=O)(=O)C2CC2)cc1, C=C[Mg]Br to produce C=CC(=O)/C(=C/C1CCOCC1)c1ccc(S(=O)(=O)C2CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.