Using O=C([O-])O, COc1ccc(-c2nn3c(NC4CCCC4)cc(Cl)cc3c2-c2ccnc(SC)n2)cc1 to produce COc1ccc(-c2nn3c(NC4CCCC4)cc(Cl)cc3c2-c2ccnc(S(C)=O)n2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.