Using Cn1c2c(c(C(=O)OC(C)(C)C)c1NS(=O)(=O)c1ccccc1)CCCC2 to produce Cn1c2c(c(C(=O)O)c1NS(=O)(=O)c1ccccc1)CCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.