Using COC(=O)c1cncc(OCCCOc2ncnc3scc(-c4ccc(F)cc4)c23)c1 to produce O=C(O)c1cncc(OCCCOc2ncnc3scc(-c4ccc(F)cc4)c23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.