Using O=C(O)c1cnc2cc(NC(=O)c3ccccc3-c3ccc(C(F)(F)F)cc3)ccc2c1, NCC(F)(F)F to produce O=C(NCC(F)(F)F)c1cnc2cc(NC(=O)c3ccccc3-c3ccc(C(F)(F)F)cc3)ccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.