Using C[Mg]Br, O=CCC1CN(C(=O)COc2ccc(Cl)cc2)CCN1Cc1ccc(F)cc1 to produce CC(O)CC1CN(C(=O)COc2ccc(Cl)cc2)CCN1Cc1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.