Using CCCOc1ccc(-c2ccc3c(c2)C=C(C(=O)OCC)CCS3)cc1, O=S([O-])[O-] to produce CCCOc1ccc(-c2ccc3c(c2)C=C(C(=O)OCC)CCS3(=O)=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.