Using O=C(N[C@@H](CCCNS(=O)(=O)c1ccc([N+](=O)[O-])cc1)C(=O)O)OCC1c2ccccc2-c2ccccc21 to produce Nc1ccc(S(=O)(=O)NCCC[C@H](NC(=O)OCC2c3ccccc3-c3ccccc32)C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.