Using Cc1ccc(S(=O)(=O)Cl)cc1, CC(C)(C)OC(=O)NCCO to produce Cc1ccc(S(=O)(=O)OCCNC(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.