Using O=Cc1ccccc1[N+](=O)[O-], COC(=O)[C@@H](N)CCCN to produce COC(=O)C12CCCN1C(c1ccccc1[N+](=O)[O-])C(c1ccccc1[N+](=O)[O-])N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.