Using O=C(O)c1ccncc1F, Nc1cc2c(cc1O)C(F)(F)OC2(F)F to produce O=C(Nc1cc2c(cc1O)C(F)(F)OC2(F)F)c1ccncc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.