Using COC1CN(c2ccc([N+](=O)[O-])cn2)C1, O=C(O)c1nc(-c2ccccc2)oc1C(F)(F)F to produce COC1CN(c2ccc(NC(=O)c3nc(-c4ccccc4)oc3C(F)(F)F)cn2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.