Using C[Mg]I, O=CCCCn1c(Cn2c(=O)n(C3CC3)c3ccncc32)nc2nc(Cl)ccc21 to produce CC(O)CCCn1c(Cn2c(=O)n(C3CC3)c3ccncc32)nc2nc(Cl)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.