Using NO, O=C1Cc2ccccc2C(=C2CCN(CCOCCOCCO)CC2)c2ccsc21 to produce OCCOCCOCCN1CCC(=C2c3ccccc3CC(=NO)c3sccc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.