Using O=[N+]([O-])c1ccc(N2CCN(Cc3ncc(-c4ccccc4)o3)CC2)cc1 to produce Nc1ccc(N2CCN(Cc3ncc(-c4ccccc4)o3)CC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.