Using COC(=O)c1ccc2c(c1)-c1sc(-c3nncn3-c3ccc(F)cc3F)cc1CCO2 to produce O=C(O)c1ccc2c(c1)-c1sc(-c3nncn3-c3ccc(F)cc3F)cc1CCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.