Using CCCCN1CCN(S(C)(=O)=O)c2ccc(C(=O)OC)cc21 to produce CCCCN1CCN(S(C)(=O)=O)c2ccc(C(=O)O)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.