Using O=C(Oc1ccccc1)Oc1ccccc1, O=[N+]([O-])c1ccc2c3c(nn2CCNCCO)-c2ccccc2Sc13 to produce O=C1OCCN1CCn1nc2c3c(c([N+](=O)[O-])ccc31)Sc1ccccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.