Using CC(=O)OC(C)=O, COCCOc1cnc(Sc2cc(C)c(-c3csc(NC(=O)c4ccncc4)n3)c(C)c2)cn1 to produce COCCOc1cnc(S(=O)c2cc(C)c(-c3csc(NC(=O)c4ccncc4)n3)c(C)c2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.