Using O=[N+]([O-])c1cc(CCCCCc2ccc(O)c([N+](=O)[O-])c2)ccc1O to produce Nc1cc(CCCCCc2ccc(O)c(N)c2)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.