Using CC=C(C)[Mg]Br, O=[N+]([O-])c1ccc(F)nc1N1CCc2ccccc2C1 to produce Cc1[nH]c2c(N3CCc4ccccc4C3)nc(F)cc2c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.