Using O=Cc1cccc2c(-c3ccccc3)c([N+](=O)[O-])oc12, NNC(N)=O to produce NC(=O)NN=Cc1cccc2c(-c3ccccc3)c([N+](=O)[O-])oc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.