Using OCCO, O=[N+]([O-])c1ccc(-c2cc(-c3ccccc3F)nc3ncccc23)c2ccncc12 to produce OCCOc1ccc(-c2cc(-c3ccccc3F)nc3ncccc23)c2ccncc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.