Using CCOC(=O)C(=O)OCC, CC(=O)c1cc(Oc2ccccc2)c(NS(C)(=O)=O)cc1O to produce CCOC(=O)c1cc(=O)c2cc(Oc3ccccc3)c(NS(C)(=O)=O)cc2o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.