Using COC(=O)C1=Cc2cc(O)ccc2S(=O)(=O)CC1, CCOc1ccc(CO)cc1 to produce CCOc1ccc(COc2ccc3c(c2)C=C(C(=O)OC)CCS3(=O)=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.