Using CN(C[C@H]1CCNC1)C(=O)OCc1ccc([N+](=O)[O-])cc1, O=C(O)[C@@H]1C[C@@H](O)CN1C(=O)OCc1ccc([N+](=O)[O-])cc1 to produce CN(C[C@H]1CCN(C(=O)[C@@H]2C[C@@H](O)CN2C(=O)OCc2ccc([N+](=O)[O-])cc2)C1)C(=O)OCc1ccc([N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.