Using CCS(=O)(=O)CC[C@H]1CN(c2cccc(Cl)c2)C(=O)CN1C(=O)OC(C)(C)C to produce CCS(=O)(=O)CC[C@H]1CN(c2cccc(Cl)c2)C(=O)CN1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.