Using COc1cc(OC)nc(S(C)(=O)=O)n1, Cc1csc2ccc(O)c(C=O)c12 to produce COc1cc(OC)nc(Oc2ccc3scc(C)c3c2C=O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.