Using O=C(C(F)(F)F)C(F)(F)F, Nc1cccc2cnccc12 to produce Nc1c(C(O)(C(F)(F)F)C(F)(F)F)ccc2cnccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.