Using COc1ccc2c(c1)CC=C(c1ccc(OC)cc1[N+](=O)[O-])C2(C)C to produce COc1ccc(C2CCc3cc(OC)ccc3C2(C)C)c(N)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.