Using C[Mg]Cl, CCCn1cnc2c1c(=O)n(CCCCC(C)=O)c(=O)n2C to produce CCCn1cnc2c1c(=O)n(CCCCC(C)(C)O)c(=O)n2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.