Using CCOC(=O)CCCCC(NC(=O)c1ccccc1)c1ccc2ccccc2c1, NO to produce O=C(CCCCC(NC(=O)c1ccccc1)c1ccc2ccccc2c1)NO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.