Using O=C(Cl)CCl, NC1COc2nc([N+](=O)[O-])cn2C1 to produce O=C(CCl)N[C@@H]1COc2nc([N+](=O)[O-])cn2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.