Using CC(=O)S[C@H]1C[C@@H](COC(=O)NC(=O)C(Cl)(Cl)Cl)N(C(=O)OCc2ccc([N+](=O)[O-])cc2)C1 to produce NC(=O)OC[C@@H]1C[C@H](S)CN1C(=O)OCc1ccc([N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.