Using C[Mg]I, CCCCc1nc(C(C)=O)c(C#N)n1C(c1ccccc1)(c1ccccc1)c1ccccc1 to produce CCCCc1nc(C(C)(C)O)c(C#N)n1C(c1ccccc1)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.