Using COc1c(C)cc(C2(c3cccc(-c4cncnc4)c3)N=C(N)c3c(F)cccc32)cc1CBr, [C-]#N to produce COc1c(C)cc(C2(c3cccc(-c4cncnc4)c3)N=C(N)c3c(F)cccc32)cc1CC#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.