Using CC(=O)CCC=C(C)CCC=C(C)COC1CCCCO1, C=C[Mg]Br to produce C=CC(C)(O)CCC=C(C)CCC=C(C)COC1CCCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.