Using COCC1(C)CC(O)c2c(C)c([N+](=O)[O-])c(C)c(C)c2O1 to produce COCC1(C)C=Cc2c(C)c([N+](=O)[O-])c(C)c(C)c2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.