Using O=C(CCN1CCc2ccc([N+](=O)[O-])cc2C1)OCc1ccccc1 to produce Nc1ccc2c(c1)CN(CCC(=O)OCc1ccccc1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.