Using O=C(n1ccnc1)n1ccnc1, O=C(O)Cn1c(-c2ccc([N+](=O)[O-])cc2)nc2cccnc21 to produce CN(C)C(=O)Cn1c(-c2ccc([N+](=O)[O-])cc2)nc2cccnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.