Using NO, CCN1CCC(=O)c2cccc(CSc3nc4ccccc4[nH]3)c21 to produce CCN1CCC(=NO)c2cccc(CSc3nc4ccccc4[nH]3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.