Using CS(=O)(=O)Nc1ccc2c(c1)OC(CN)CO2, COc1ccc2[nH]cc(CCCC(=O)O)c2c1 to produce COc1ccc2[nH]cc(CCCCNCC3COc4ccc(NS(C)(=O)=O)cc4O3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.