Using COC(=O)C1CN(C(=O)OC(C)(C)C)CCN1S(C)(=O)=O to produce CC(C)(C)OC(=O)N1CCN(S(C)(=O)=O)C(CO)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.