Using CCCc1c(CSCc2ccc(-c3nnn[nH]3)cc2)ccc(C(C)=O)c1O, CC(=O)O to produce CCCc1c(CS(=O)Cc2ccc(-c3nnn[nH]3)cc2)ccc(C(C)=O)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.