Using O=[N+]([O-])c1c(N2CCOCC2)c(Nc2ccccc2)nc2ccccc12 to produce Nc1c(N2CCOCC2)c(Nc2ccccc2)nc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.