Using Nc1c(F)cccc1Br, COC(=O)c1cc(-c2cnn(C3CCN(C)CC3)c2)cnc1N to produce CN1CCC(n2cc(-c3cnc(N)c(C(=O)Nc4c(F)cccc4Br)c3)cn2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.