Using O=c1c([N+](=O)[O-])c(-c2ccccc2)nc2n1CCCN2c1ccnc(NCCc2ccccc2)n1 to produce Nc1c(-c2ccccc2)nc2n(c1=O)CCCN2c1ccnc(NCCc2ccccc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.