Using CC(=O)Nc1cc2c(cc1[N+](=O)[O-])NC(=O)C2(C)C, Cc1nc(C)c(CCl)s1 to produce Cc1nc(C)c(CN2C(=O)C(C)(C)c3cc(N)c([N+](=O)[O-])cc32)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.