Using C[Mg]Cl, O=C1CCC(Nc2nccc(-n3nnc4ccccc43)n2)CC1 to produce CC1(O)CCC(Nc2nccc(-n3nnc4ccccc43)n2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.