Using O=C(NCCc1c[nH]c2ccc(Cl)cc12)c1cc(C(=O)c2cc(F)ccc2F)on1 to produce O=C(NCCc1c[nH]c2ccc(Cl)cc12)c1cc(C(O)c2cc(F)ccc2F)on1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.