Using O=C1Nc2ccc([N+](=O)[O-])cc2C1=O, CCOP(=O)(OCC)C(OC)c1ccc(OC)cc1 to produce COC(=C1C(=O)Nc2ccc([N+](=O)[O-])cc21)c1ccc(OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.