Using COC(=O)C1(NC(=O)OC(C)(C)C)CCNCC1, O=S(=O)(Cl)c1ccccc1Cl to produce CC(C)(C)OC(=O)NC1(C(=O)O)CCN(S(=O)(=O)c2ccccc2Cl)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.