Using O=C(O)c1ccncc1Cl, Nc1cc(C(F)(F)F)c(Cl)cc1O to produce O=C(Nc1cc(C(F)(F)F)c(Cl)cc1O)c1ccncc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.