Using OC(c1ccc(F)cc1)C1CCC2CN(c3ncccn3)CCN2C1 to produce O=C(c1ccc(F)cc1)C1CCC2CN(c3ncccn3)CCN2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.