Using C[Mg]Br, CCOC(=O)CCc1c(C=O)nc2c(cnn2CC)c1-c1cncc(C)c1 to produce CCOC(=O)CCc1c(C(C)O)nc2c(cnn2CC)c1-c1cncc(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.