Using COc1cc2ncc([N+](=O)[O-])c(Oc3ccc4c(C(=O)O)cccc4c3)c2cc1OC to produce COc1cc2ncc(N)c(Oc3ccc4c(C(=O)O)cccc4c3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.