Using CS(=O)(=O)Cl, Cc1c(C(=O)Nc2ccc(SCCCO)c(C#N)c2)cnn1-c1ccc(Cl)cc1 to produce Cc1c(C(=O)Nc2ccc(SCCCOS(C)(=O)=O)c(C#N)c2)cnn1-c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.