Using O=C([O-])[O-], C=CCc1cc(OCC)c2c(c1O)S(=O)(=O)N(Cc1ccccc1)C2=O to produce C=CCc1cc(OCC)c2c(c1OC)S(=O)(=O)N(Cc1ccccc1)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.