Using CCOC(=O)c1cc2ccc(C(F)c3nnc(-c4ccccc4)o3)cc2s1 to produce O=C(O)c1cc2ccc(C(F)c3nnc(-c4ccccc4)o3)cc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.