Using NCc1cccc(C(F)(F)F)c1, O=C(O)c1cccc2[nH]ncc12 to produce O=C(NCc1cccc(C(F)(F)F)c1)c1cccc2[nH]ncc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.