Using CCCc1c(OCc2ccc([N+](=O)[O-])cc2)ccc(C(C)=O)c1O to produce CCCc1c(OCc2ccc(N)cc2)ccc(C(C)=O)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.