Using CCCCCC(CC(=O)Nc1cc(C(N)=O)ccc1C(C)(C)C)c1ccc(C=O)cc1OC, NO to produce CCCCCC(CC(=O)Nc1cc(C(N)=O)ccc1C(C)(C)C)C1=C(OC)CC(=NO)C=C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.