Using O=C(O)C(c1cccc(OC(F)(F)F)c1)c1cccc(OC(F)(F)F)c1, BrCc1ncccn1 to produce O=C(O)C(Cc1ncccn1)(c1cccc(OC(F)(F)F)c1)c1cccc(OC(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.