Using CCc1ccc2[nH]cc(CCC(=O)O)c2c1, O=S(=O)(Cl)c1ccccc1 to produce CCc1ccc2c(c1)c(CCC(=O)O)cn2S(=O)(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.