Using O=C1CN2C[C@H](Oc3cnc(C4CC4)cn3)C[C@H]2CN1, FC(F)(F)c1cccc(CBr)c1 to produce O=C1CN2C[C@H](Oc3cnc(C4CC4)cn3)C[C@H]2CN1Cc1cccc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.