Using C=CCBr, CC(C)(C)OC(=O)N1CCN(c2ncc(Br)cc2F)CC1 to produce C=CCc1cnc(N2CCN(C(=O)OC(C)(C)C)CC2)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.