Using NO, CC1(C)OC(=O)Nc2ccc(-c3coc(C=O)c3)cc21 to produce CC1(C)OC(=O)Nc2ccc(-c3coc(C=NO)c3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.