Using O=C(Nc1cccc(C(F)(F)F)c1)c1coc2cc(Oc3cc(COCc4ccccc4)ncn3)ccc12 to produce O=C(Nc1cccc(C(F)(F)F)c1)c1coc2cc(Oc3cc(CO)ncn3)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.