Using CCN(CC)C/C=C\c1ccccc1S(=O)(=O)Nc1ccc2c(c1C(=O)OC)OCC1CC21 to produce CCN(CC)C/C=C\c1ccccc1S(=O)(=O)Nc1ccc2c(c1C(=O)O)OCC1CC21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.