Using COC(=O)c1nc(NC(=O)c2c(F)cccc2F)sc1-c1cccc(F)c1 to produce O=C(Nc1nc(CO)c(-c2cccc(F)c2)s1)c1c(F)cccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.