Using CCS, CCOC(=O)c1cc(Cl)c(Cl)c(-c2cc(C)no2)c1C to produce CCOC(=O)c1ccc(SCC)c(-c2cc(C)no2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.