Using CC(=O)c1ccc2c(c1)N(C(=O)OC(C)(C)C)CCC2, NO to produce CC(=NO)c1ccc2c(c1)N(C(=O)OC(C)(C)C)CCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.